US7026500B2 - Halogenated selective androgen receptor modulators and methods of use thereof - Google Patents

Halogenated selective androgen receptor modulators and methods of use thereof Download PDF

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US7026500B2
US7026500B2 US10/371,213 US37121303A US7026500B2 US 7026500 B2 US7026500 B2 US 7026500B2 US 37121303 A US37121303 A US 37121303A US 7026500 B2 US7026500 B2 US 7026500B2
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compound
androgen receptor
another embodiment
sarm
compounds
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US20040029913A1 (en
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James T. Dalton
Duane D. Miller
Mitchell S. Steiner
Karen A. Veverka
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University of Tennessee Research Foundation
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University of Tennessee Research Foundation
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Priority claimed from US09/935,045 external-priority patent/US6569896B2/en
Priority claimed from US10/270,732 external-priority patent/US6998500B2/en
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Assigned to UNIVERSITY OF TENNESSEE RESEARCH CORPORATION, THE reassignment UNIVERSITY OF TENNESSEE RESEARCH CORPORATION, THE ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DALTON, JAMES T., MILLER, DUANE D., STEINER, MITCHELL S., VEVERKA, KAREN A.
Priority to DK03777595T priority patent/DK1558565T3/en
Priority to EP10075692A priority patent/EP2305636A1/en
Priority to EP06026706A priority patent/EP1764357A1/en
Priority to CA002502355A priority patent/CA2502355A1/en
Priority to CNA2007100842211A priority patent/CN100999481A/en
Priority to SI200331644T priority patent/SI1558565T1/en
Priority to CA002538095A priority patent/CA2538095C/en
Priority to EA200500648A priority patent/EA011744B1/en
Priority to KR1020057006606A priority patent/KR101068779B1/en
Priority to GEAP200310055A priority patent/GEP20094820B/en
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Priority to EA200700854A priority patent/EA014932B1/en
Priority to PT03777595T priority patent/PT1558565E/en
Priority to KR1020077010374A priority patent/KR101069612B1/en
Priority to KR1020107029192A priority patent/KR101107031B1/en
Priority to DE60327456T priority patent/DE60327456D1/en
Priority to BR0314891-2A priority patent/BR0314891A/en
Priority to CNA2007101041899A priority patent/CN101062023A/en
Priority to AU2003287074A priority patent/AU2003287074B2/en
Priority to MXPA05004076A priority patent/MXPA05004076A/en
Priority to PCT/US2003/032507 priority patent/WO2004035736A2/en
Priority to CN200380106307XA priority patent/CN1726185B/en
Priority to EP03777595A priority patent/EP1558565B1/en
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Priority to TW092128713A priority patent/TWI332955B/en
Publication of US20040029913A1 publication Critical patent/US20040029913A1/en
Priority to US10/863,524 priority patent/US20050038110A1/en
Priority to US11/029,022 priority patent/US20060004042A1/en
Priority to HR20050334A priority patent/HRP20050334A2/en
Assigned to UNIVERSITY OF TENNESSEE RESEARCH FOUNDATION reassignment UNIVERSITY OF TENNESSEE RESEARCH FOUNDATION CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: THE UNIVERSITY OF TENNESSEE RESEARCH CORPORATION
Priority to US11/146,427 priority patent/US7622503B2/en
Assigned to UNIVERSITY OF TENNESSEE RESEARCH FOUNDATION reassignment UNIVERSITY OF TENNESSEE RESEARCH FOUNDATION CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: UNIVERSITY OF TENNESSEE RESEARCH CORPORATION
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Priority to US11/220,414 priority patent/US7855229B2/en
Priority to HK06101428.4A priority patent/HK1080070A1/en
Priority to US11/355,187 priority patent/US7919647B2/en
Priority to JP2006060868A priority patent/JP2006199704A/en
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Priority to IL182880A priority patent/IL182880A0/en
Priority to JP2007121464A priority patent/JP4694529B2/en
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Priority to IL190931A priority patent/IL190931A0/en
Priority to CY20091100794T priority patent/CY1109858T1/en
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Definitions

  • the present invention relates to a novel class of androgen receptor targeting agents (ARTA), which demonstrate androgenic and anabolic activity of a nonsteroidal ligand for the androgen receptor.
  • the agents define a new subclass of compounds, which are selective androgen receptor modulators (SARMs) useful for a) male contraception; b) treatment of a variety of hormone-related conditions, for example conditions associated with Androgen Decline in Aging Male (ADAM); c) treatment of conditions associated with Androgen Decline in Female (ADIF), d) treatment and/or prevention of acute and/or chronic muscular wasting conditions; e) preventing and/or treating dry eye conditions; f) oral androgen replacement therapy; and/or g) decreasing the incidence of, halting or causing a regression of prostate cancer.
  • SARMs selective androgen receptor modulators
  • the androgen receptor (“AR”) is a ligand-activated transcriptional regulatory protein that mediates induction of male sexual development and function through its activity with endogenous androgens. Androgens are generally known as the male sex hormones.
  • the androgenic hormones are steroids which are produced in the body by the testes and the cortex of the adrenal gland or can be synthesized in the laboratory. Androgenic steroids play an important role in many physiologic processes, including the development and maintenance of male sexual characteristics such as muscle and bone mass, prostate growth, spermatogenesis, and the male hair pattern (Matsumoto, Endocrinol. Met. Clin. N. Am. 23:857-75 (1994)).
  • the endogenous steroidal androgens include testosterone and dihydrotestosterone (“DHT”).
  • Testosterone is the principal steroid secreted by the testes and is the primary circulating androgen found in the plasma of males. Testosterone is converted to DHT by the enzyme 5 alpha-reductase in many peripheral tissues. DHT is thus thought to serve as the intracellular mediator for most androgen actions (Zhou, et al., Molec. Endocrinol. 9:208-18 (1995)).
  • steroidal androgens include esters of testosterone, such as the cypionate, propionate, phenylpropionate, cyclopentylpropionate, isocarporate, enanthate, and decanoate esters, and other synthetic androgens such as 7-Methyl-Nortestosterone (“MENT”) and its acetate ester (Sundaram et al., “7 Alpha-Methyl-Nortestosterone(MENT): The Optimal Androgen For Male Contraception,” Ann. Med., 25:199-205 (1993) (“Sundaram”)). Because the AR is involved in male sexual development and function, the AR is a likely target for effecting male contraception or other forms of hormone replacement therapy.
  • esters of testosterone such as the cypionate, propionate, phenylpropionate, cyclopentylpropionate, isocarporate, enanthate, and decanoate esters
  • Contraception is a difficult subject under any circumstance. It is fraught with cultural and social stigma, religious implications, and, most certainly, significant health concerns. This situation is only exacerbated when the subject focuses on male contraception.
  • society has looked to women to be responsible for contraceptive decisions and their consequences. Although concern over sexually transmitted diseases has made men more aware of the need to develop safe and responsible sexual habits, women still often bear the brunt of contraceptive choice. Women have a number of choices, from temporary mechanical devices such as sponges and diaphragms to temporary chemical devices such as spermicides.
  • the only options available for men include the use of condoms and vasectomy.
  • Condom use is not favored by many men because of the reduced sexual sensitivity, the interruption in sexual spontaneity, and the significant possibility of pregnancy caused by breakage or misuse. Vasectomies are also not favored. If more convenient methods of birth control were available to men, particularly long-term methods which require no preparative activity immediately prior to a sexual act, such methods could significantly increase the likelihood that men would take more responsibility for contraception.
  • testosterone esters have been developed which are more slowly absorbed after intramuscular injection and thus result in greater androgenic effect.
  • Testosterone enanthate is the most widely used of these esters. While testosterone enanthate has been valuable in terms of establishing the feasibility of hormonal agents for male contraception, it has several drawbacks, including the need for weekly injections and the presence of supraphysiologic peak levels of testosterone immediately following intramuscular injection (Wu, “Effects of Testosterone Enanthate in Normal Men: Experience From a Multicenter Contraceptive Efficacy Study,” Fertility and Sterility 65:626-36 (1996)).
  • Steroidal ligands which bind the AR and act as androgens (e.g. testosterone enanthate) or as antiandrogens (e.g. cyproterone acetate) have been known for many years and are used clinically (Wu 1988). Although nonsteroidal antiandrogens are in clinical use for hormone-dependent prostate cancer, nonsteroidal androgens have not been reported. For this reason, research on male contraceptives,has focused solely on steroidal compounds.
  • Prostate cancer is one of the most frequently occurring cancers among men in the United States, with hundreds of thousands of new cases diagnosed each year. Unfortunately, over sixty percent of newly diagnosed cases of prostate cancer are found to be pathologically advanced, with no cure and a dismal prognosis.
  • One approach to this problem is to find prostate cancer earlier through screening programs and thereby reduce the number of advanced prostate cancer patients.
  • Another strategy is to develop drugs to prevent prostate cancer.
  • One third of all men over 50 years of age have a latent form of prostate cancer that may be activated into the life-threatening clinical prostate cancer form. The frequency of latent prostatic tumors has been shown to increase substantially with each decade of life from the 50s (5.3-14%) to the 90s (40-80%).
  • Osteoporosis is a systemic skeletal disease, characterized by low bone mass and deterioration of bone tissue, with a consequent increase in bone fragility and susceptibility to fracture.
  • the condition affects more than 25 million people and causes more than 1.3 million fractures each year, including 500,000 spine, 250,000 hip and 240,000 wrist fractures annually.
  • Hip fractures are the most serious consequence of osteoporosis, with 5-20% of patients dying within one year, and over 50% of survivors being incapacitated.
  • the elderly are at greatest risk of osteoporosis, and the problem is therefore predicted to increase significantly with the aging of the population.
  • Worldwide fracture incidence is forecasted to increase three-fold over the next 60 years, and one study estimated that there will be 4.5 million hip fractures worldwide in 2050.
  • ADAM Androgen decline in the aging male
  • ADAM Androgen decline in the aging male
  • the syndrome is characterized by alterations in the physical and intellectual domains that correlate with and can be corrected by manipulation of the androgen milieu.
  • ADAM is characterized biochemically by a decrease not only in serum androgen, but also in other hormones, such as growth hormone, melatonin and dehydroepiandrosterone.
  • Clinical manifestations include fatigue, depression, decreased libido, sexual dysfunction, erectile dysfunction, hypogonadism, osteoporosis, hair loss, obesity, sarcopenia, osteopenia, benign prostate hyperplasia, anemia, alterations in mood and cognition and prostate cancer.
  • Androgen Deficiency in Female refers to a variety of hormone-related conditions including, common in females after middle agest. The syndrome is characterized by sexual dysfunction, decreased sexual libido, hypogonadism, sarcopenia, osteopenia, osteoporosis, alterations in cognition and mood, anemia, depression, anemia, hair loss, obesity, endometriosis, breast cancer, uterine cancer and ovarian cancer.
  • Muscle wasting refers to the progressive loss of muscle mass and/or to the progressive weakening and degeneration of muscles, including the skeletal or voluntary muscles, which control movement, cardiac muscles, which control the heart (cardiomyopathics), and smooth muscles.
  • Chronic muscle wasting is a chronic condition (i.e. persisting over a long period of time) characterized by progressive loss of muscle mass, weakening and degeneration of muscle.
  • the loss of muscle mass that occurs during muscle wasting can be characterized by a muscle protein breakdown or degradation. Protein degradation occurs because of an unusually high rate of protein degradation, an unusually low rate of protein synthesis, or a combination of both. Protein degradation, whether caused by a high degree of protein degradation or a low degree of protein synthesis, leads to a decrease in muscle mass and to muscle wasting.
  • Muscle wasting is associated with chronic, neurological, genetic or infectious pathologies, diseases, illnesses or conditions. These include Muscular Dystrophies such as Duchenne Muscular Dystrophy and Myotonic Dystrophy; Muscle Atrophies such as Post-Polio Muscle Atrophy (PMA); Cachexias such as Cardiac Cachexia, AIDS Cachexia and Cancer Cachexia, malnutrition, Leprosy, Diabetes, Renal Disease, Chronic Obstructive Pulmonary Disease (COPD), Cancer, end stage Renal failure, Emphysema, Osteomalacia, HIV Infection, AIDS, and Cardiomyopathy, In addition, other circumstances and conditions are linked to and can cause muscle wasting.
  • Muscular Dystrophies such as Duchenne Muscular Dystrophy and Myotonic Dystrophy
  • Muscle Atrophies such as Post-Polio Muscle Atrophy (PMA)
  • Cachexias such as Cardiac Cachexia, AIDS Cachexia and Cancer Cachexia, mal
  • Muscle wasting if left unabated, can have dire health consequences. For example, the changes that occur during muscle wasting can lead to a weakened physical state that is detrimental to an individual's health, resulting in increased susceptibility to infection, poor performance status and susceptibility to injury.
  • New innovative approaches are urgently needed at both the basic science and clinical levels to develop compounds which are useful for a) male contraception; b) treatment of a variety of hormone-related conditions, for example conditions associated with Androgen Decline in Aging Male (ADAM), such as fatigue, depression, decreased libido, sexual dysfunction, erectile dysfunction, hypogonadism, osteoporosis, hair loss, anemia, obesity, sarcopenia, osteopenia, osteoporosis, benign prostate hyperplasia, alterations in mood and cognition and prostate cancer; c) treatment of conditions associated with ADIF, such as sexual dysfunction, decreased sexual libido, hypogonadism, sarcopenia, osteopenia, osteoporosis, alterations in cognition and mood, depression, anemia, hair loss, obesity, endometriosis, breast cancer, uterine cancer and ovarian cancer; d) treatment and/or prevention of acute and/or chronic muscular wasting conditions; e) preventing and/or treating dry
  • this invention provides a class of androgen receptor targeting agents (ARTA).
  • the agents define a new subclass of compounds, which are selective androgen receptor modulators (SARM).
  • SARM selective androgen receptor modulators
  • Several of the SARM compounds have been found to have an unexpected androgenic and anabolic activity of a nonsteroidal ligand for the androgen receptor.
  • Other SARM compounds have been found to have an unexpected antiandrogenic activity of a nonsteroidal ligand for the androgen receptor.
  • the SARM compounds are useful for a) male contraception; b) treatment of a variety of hormone-related conditions, for example conditions associated with Androgen Decline in Aging Male (ADAM), such as fatigue, depression, decreased libido, sexual dysfunction, erectile dysfunction, hypogonadism, osteoporosis, hair loss, anemia, obesity, sarcopenia, osteopenia, osteoporosis, benign prostate hyperplasia, alterations in mood and cognition and prostate cancer; c) treatment of conditions associated with Androgen Decline in Female (ADIF), such as sexual dysfunction, decreased sexual libido, hypogonadism, sarcopenia, osteopenia, osteoporosis, alterations in cognition and mood, depression, anemia, hair loss, obesity, endometriosis, breast cancer, uterine cancer and ovarian cancer; d) treatment and/or prevention of acute and/or chronic muscular wasting conditions; e) preventing and/or treating a variety of hormone-related conditions
  • the present invention provides a selective androgen receptor modulator (SARM) compound represented by the structure of formula I:
  • the present invention provides an analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide of the compound of formula I, or any combination thereof.
  • X in compound (I) is O. In another embodiment, Z in compound (I) is NO 2 . In another embodiment, Z in compound (I) is CN. In another embodiment, Z in compound (I) is H. In another embodiment, Z in compound (I) is Cl. In another embodiment, Z in compound (I) is Br. In another embodiment, Z in compound (I) is F. In another embodiment, Z in compound (I) is I. In another embodiment, Y in compound (I) is CF 3 . In another embodiment, Y in compound (I) is Cl. In another embodiment, Y in compound (I) is Br. In another embodiment, Y in compound (I) is F. In another embodiment, Y in compound (I) is I.
  • Q in compound (I) is NHCOCH 3 .
  • Q in compound (I) is F.
  • T in compound (I) is OH.
  • R 1 in compound (I) is CH 3 .
  • Q in compound (I) is in the para position.
  • Z in compound (I) is in the para position.
  • Y in compound (I) is in the meta position.
  • Q in compound (I) is in the para position, Y is in the meta position and Z is in the para position.
  • the present invention provides a selective androgen receptor modulator (SARM) compound having in-vivo androgenic and anabolic activity of a nonsteroidal ligand for the androgen receptor, said compound represented by the structure of formula II: wherein X, Y, Z and Q are as defined above for compound I.
  • SARM selective androgen receptor modulator
  • the present invention provides an analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide of the compound of formula II, or any combination thereof.
  • X in compound (II) is O. In another embodiment, Z in compound (II) is NO 2 . In another embodiment, Z in compound (II) is CN. In another embodiment, Z in compound (II) is H. In another embodiment, Z in compound (II) is Cl. In another embodiment, Z in compound (II) is Br. In another embodiment, Z in compound (II) is F. In another embodiment, Z in compound (II) is I. In another embodiment, Y in compound (II) is CF 3 . In another embodiment, Y in compound (II) is Cl. In another embodiment, Y in compound (II) is Br. In another embodiment, Y in compound (II) is F. In another embodiment, Y in compound (II) is I. In another embodiment, Q in compound (II) is NHCOCH 3 . In another embodiment, Q in compound (II) is F.
  • the compound of formula II is represented by the structure:
  • the compound of formula II is represented by the structure:
  • the compound of formula II is represented by the structure:
  • the compound of formula II is represented by the structure:
  • the compound of formula II is represented by the structure:
  • the compound of formula II is represented by the structure:
  • the compound of formula HI is represented by the structure:
  • the compound of formula II is represented by the structure:
  • the compound of formula II is represented by the structure:
  • the compound of formula II is represented by the structure:
  • the present invention provides a composition comprising the selective androgen receptor modulator compound of formula I or II and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof.
  • the present invention provides a pharmaceutical composition
  • a pharmaceutical composition comprising the selective androgen receptor modulator compound of formula I or II and/or its analog, derivative, isomer, metabolite, pharmaceutical product, hydrate or N-oxide or any combination thereof; and a suitable carrier or diluent.
  • the present invention provides a method of binding a selective androgen receptor modulator compound to an androgen receptor, comprising the step of contacting the androgen receptor with the selective androgen receptor modulator compound of formula I or II and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to bind the selective androgen receptor modulator compound to the androgen receptor.
  • the present invention provides a method of suppressing spermatogenesis in a subject comprising contacting an androgen receptor of the subject with the selective androgen receptor modulator compound of formula I or II and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to suppress sperm production.
  • the present invention provides a method of contraception in a male subject, comprising the step of administering to the subject the selective androgen receptor modulator compound of formula I or II and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to suppress sperm production in the subject, thereby effecting contraception in the subject.
  • the present invention provides a method of hormone therapy comprising the step of contacting an androgen receptor of a subject with the selective androgen receptor modulator compound of any of formula I or II and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to effect a change in an androgen-dependent condition.
  • the present invention provides a method of hormone replacement therapy comprising the step of contacting an androgen receptor of a subject with the selective androgen receptor modulator compound of formula I or II and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to effect a change in an androgen-dependent condition.
  • the present invention provides a method of treating a subject having a hormone related condition, comprising the step of administering to the subject the selective androgen receptor modulator compound of formula I or II and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to effect a change in an androgen-dependent condition.
  • the present invention provides a method of treating a subject suffering from prostate cancer, comprising the step of administering to said subject the selective androgen receptor modulator compound of formula I or II and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to treat prostate cancer in the subject.
  • the present invention provides a method of preventing prostate cancer in a subject, comprising the step of administering to the subject the selective androgen receptor modulator compound of formula I or II and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to prevent prostate cancer in the subject.
  • the present invention provides a method of delaying the progression of prostate cancer in a subject suffering from prostate cancer, comprising the step of administering to said subject the selective androgen receptor modulator compound of formula I or II and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to delay the progression of prostate cancer in the subject.
  • the present invention provides a method of preventing the recurrence of prostate cancer in a subject suffering from prostate cancer, comprising the step of administering to said subject the selective androgen receptor modulator compound of formula I or II and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to prevent the recurrence of prostate cancer in the subject.
  • the present invention provides a method of treating the recurrence of prostate cancer in a subject suffering from prostate cancer, comprising the step of administering to said subject the selective androgen receptor modulator compound of formula I or II and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to treat the recurrence of prostate cancer in the subject.
  • the present invention provides a method of treating a dry eye condition in a subject suffering from dry eyes, comprising the step of administering to said subject the selective androgen receptor modulator compound of formula I or II and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to treat dry eyes in the subject.
  • the present invention provides a method of preventing a dry eye condition in a subject, comprising the step of administering to said subject the selective androgen receptor modulator compound of formula I or II and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to prevent dry eyes in the subject.
  • novel selective androgen receptor modulator compounds of the present invention are useful for a) male contraception; b) treatment of a variety of hormone-related conditions, for example conditions associated with ADAM, such as fatigue, depression, decreased libido, sexual dysfunction, erectile dysfunction, hypogonadism, osteoporosis, hair loss, obesity, sarcopenia, osteopenia, benign prostate hyperplasia, and alterations in mood and cognition, c) treatment of conditions associated with ADIF, such as sexual dysfunction, decreased sexual libido, hypogonadism, sarcopenia, osteopenia, osteoporosis, alterations in cognition and mood, depression, anemia, hair loss, obesity, endometriosis, breast cancer, uterine cancer and ovarian cancer; d) treatment and/or prevention of acute and/or chronic muscular wasting conditions; e) preventing and/or treating dry eye conditions; f) oral androgen replacement therapy; and/or
  • the selective androgen receptor modulator compounds of the present invention offer a significant advance over steroidal androgen treatment because the selective androgen receptor modulator compounds of the present invention have been shown in-vivo to have an androgenic and anabolic activity of a nonsteroidal ligand for the androgen receptor.
  • the selective androgen receptor modulator compounds have an androgenic and anabolic activity of a nonsteroidal ligand for the androgen receptor and will not be accompanied by serious side effects, inconvenient modes of administration, or high costs and still have the advantages of oral bioavailability, lack of cross-reactivity with other steroid receptors, and long biological half-lives.
  • FIG. 1 Androgenic and Anabolic activity of Compounds 1-4. Rats were left untreated (intact control), castrated (0 mg/day control), or treated with 0.1, 0.3, 0.5, 0.75 and 1.0 mg/day of compound 1 (FIG. 1 A), compound 2 (FIG. 1 B), compound 3 ( FIG. 1C ) or compound 4 (FIG. 1 D), and the weight of androgen-responsive tissues (prostate, semimal vesicles and levator ani muscle) was determined.
  • FIG. 2 Androgenic and Anabolic activity of Compound 5. Rats were left untreated (intact control), castrated (0 mg/day control), or treated with 0.1, 0.25, 0.5, 0.75 and 1.0 mg/day of compound 5, and the weight of androgen-responsive tissues (prostate, semimal vesicles and levator ani muscle) was determined.
  • FIG. 3 Androgenic and Anabolic activity of Compound 6 in rats. Rats were left untreated (intact control), castrated (castrated control), treated with 0.1, 0.3, 0.5, 0.75 and 1.0 mg/day testosterone propionate (TP), or treated with 0.1, 0.3, 0.5, 0.75 and 1.0 mg/day Compound V, and the weight of androgen-responsive tissues (prostate, semimal vesicles and levator ani muscle) was determined.
  • TP testosterone propionate
  • this invention provides a class of androgen receptor targeting agents (ARTA).
  • the agents define a new subclass of compounds, which are selective androgen receptor modulators (SARM).
  • SARM selective androgen receptor modulators
  • Several of the SARM compounds have been found to have an unexpected androgenic and anabolic activity of a nonsteroidal ligand for the androgen receptor.
  • Other SARM compounds have been found to have an unexpected antiandrogenic activity of a nonsteroidal ligand for the androgen receptor.
  • the SARM compounds are useful for a) male contraception; b) treatment of a variety of hormone-related conditions, for example conditions associated with Androgen Decline in Aging Male (ADAM), such as fatigue, depression, decreased libido, sexual dysfunction, erectile dysfunction, hypogonadism, osteoporosis, hair loss, anemia, obesity, sarcopenia, osteopenia, osteoporosis, benign prostate hyperplasia, alterations in mood and cognition and prostate cancer; c) treatment of conditions associated with Androgen Decline in Female (ADIF), such as sexual dysfunction, decreased sexual libido, hypogonadism, sarcopenia, osteopenia, osteoporosis, alterations in cognition and mood, depression, anemia, hair loss, obesity, endometriosis, breast cancer, uterine cancer and ovarian cancer; d) treatment and/or prevention of acute and/or chronic muscular wasting conditions; e) preventing and/or treating a variety of hormone-related conditions
  • the present invention provides a selective androgen receptor modulator (SARM) compound represented by the structure of formula I:
  • this invention provides an analog of the compound of formula (I). In another embodiment, this invention provides a derivative of the compound of formula (I). In another embodiment, this invention provides an isomer of the compound of formula (I). In another embodiment, this invention provides a metabolite of the compound of formula (I). In another embodiment, this invention provides a pharmaceutically acceptable salt of the compound of formula (I). In another embodiment, this invention provides a pharmaceutical product of the compound of formula (I). In another embodiment, this invention provides a hydrate of the compound of formula (I). In another embodiment, this invention provides an N-oxide of the compound of formula (I). In another embodiment, this invention provides a combination of any of an analog, derivative, metabolite, isomer, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide of the compound of formula (I).
  • X in compound (I) is O. In another embodiment, Z in compound (I) is NO 2 . In another embodiment, Z in compound (I) is CN. In another embodiment, Z in compound (I) is H. In another embodiment, Z in compound (I) is Cl. In another embodiment, Z in compound (I) is Br. In another embodiment, Z in compound (I) is F. In another embodiment, Z in compound (I) is I. In another embodiment, Y in compound (I) is CF 3 . In another embodiment, Y in compound (I) is Cl. In another embodiment, Y in compound (I) is Br. In another embodiment, Y in compound (I) is F. In another embodiment, Y in compound (I) is I.
  • Q in compound (I) is NHCOCH 3 .
  • Q in compound (I) is F.
  • T in compound (I) is OH.
  • R 1 in compound (I) is CH 3 .
  • Q in compound (I) is in the para position.
  • Z in compound (I) is in the para position.
  • Y in compound (I) is in the meta position.
  • Q in compound (I) is in the para position, Y is in the meta position and Z is in the para position.
  • the substituents Z and Y can be in any position of the ring carrying these substituents (hereinafter “A ring”).
  • the substituent Z is in the para position of the A ring.
  • the substituent Y is in the meta position of the A ring.
  • the substituent Z is in the para position of the A ring and substituent Y is in the meta position of the A ring.
  • the substitutent Z is NO 2 and is in the para position of the A ring.
  • the substitutent Z is CN and is in the para position of the A ring.
  • the substitutent Z is F and is in the para position of the A ring.
  • the substitutent Z is Cl and is in the para position of the A ring. In another embodiment, the substitutent Z is Br and is in the para position of the A ring. In another embodiment, the substitutent Z is I and is in the para position of the A ring. In another embodiment, the substitutent Z is H. In another embodiment, the substitutent Y is CF 3 and is in the meta position of the A ring. In another embodiment, the substitutent Y is F and is in the meta position of the A ring. In another embodiment, the substitutent Y is Cl and is in the meta position of the A ring. In another embodiment, the substitutent Y is Br and is in the meta position of the A ring. In another embodiment, the substitutent Y is I and is in the meta position of the A ring.
  • one of Z or Y together with the benzene ring to which it is attached is a fused bicyclic carbocyclic or heterocyclic ring system, such as, but not being limited to: natphthyl, quinalzolyl, pyrimidinyl, and the like.
  • the substituent Q can be in any position of the ring carrying these substituents (hereinafter “B ring”).
  • the substitutent Q is in the para position of the B ring.
  • Q is F and is in the para position of the B ring.
  • Q is Cl and is in the para position of the B ring.
  • Q is Br and is in the para position of the B ring.
  • Q is I and is in the para position of the B ring.
  • Q is NHCOCH 3 and is in the para position of the B ring.
  • the present invention provides a selective androgen receptor modulator (SARM) compound represented by the structure of formula II: wherein X, Y, Z and Q are as defined above for compound I.
  • SARM selective androgen receptor modulator
  • this invention provides an analog of the compound of formula II. In another embodiment, this invention provides a derivative of the compound of formula II. In another embodiment, this invention provides an isomer of the compound of formula II. In another embodiment, this invention provides a metabolite of the compound of formula II. In another embodiment, this invention provides a pharmaceutically acceptable salt of the compound of formula II. In another embodiment, this invention provides a pharmaceutical product of the compound of formula II. In another embodiment, this invention provides a hydrate of the compound of formula II. In another embodiment, this invention provides an N-oxide of the compound of formula II. In another embodiment, this invention provides a combination of any of an analog, derivative, metabolite, isomer, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide of the compound of formula II.
  • X in compound (II) is O. In another embodiment, Z in compound (E) is NO 2 . In another embodiment, Z in compound (II) is CN. In another embodiment, Z in compound (II) is H. In another embodiment, Z in compound (II) is Cl. In another embodiment, Z in compound (II) is Br. In another embodiment, Z in compound (II) is F. In another embodiment, Z in compound (II) is I. In another embodiment, Y in compound (II) is CF 3 . In another embodiment, Y in compound (II) is Cl. In another embodiment, Y in compound (II) is Br. In another embodiment, Y in compound (II) is F. In another embodiment, Y in compound (II) is I. In another embodiment, Q in compound (II) is NHCOCH 3 . In another embodiment, Q in compound (II) is F.
  • the compound of formula II is represented by the structure:
  • the compound of formula II is represented by the structure:
  • the compound of formula II is represented by the structure:
  • the compound of formula II is represented by the structure:
  • the compound of formula II is represented by the structure:
  • the compound of formula II is represented by the structure:
  • the compound of formula II is represented by the structure:
  • the compound of formula II is represented by the structure:
  • the compound of formula II is represented by the structure:
  • the compound of formula II is represented by the structure:
  • the substituent R is defined herein as an alkyl, haloalkyl, dihaloalkyl, trihaloalkyl, CH 2 F, CHF 2 , CF 3 , CF 2 CF 3 ; aryl, phenyl, halogen, alkenyl, or hydroxyl (OH).
  • alkyl group refers to a saturated aliphatic hydrocarbon, including straight-chain, branched-chain and cyclic alkyl groups. In one embodiment, the alkyl group has 1-12 carbons. In another embodiment, the alkyl group has 1-7 carbons. In another embodiment, the alkyl group has 1-6 carbons. In another embodiment, the alkyl group has 1-4 carbons.
  • the alkyl group may be unsubstituted or substituted by one or more groups selected from halogen, hydroxy, alkoxy carbonyl, amido, alkylamido, dialkylamido, nitro, amino, alkylamino, dialkylamino, carboxyl, thio and thioalkyl.
  • haloalkyl group refers to an alkyl group as defined above, which is substituted by one or more halogen atoms, e.g. by F, Cl, Br or I.
  • aryl refers to an aromatic group having at least one carbocyclic aromatic group or heterocyclic aromatic group, which may be unsubstituted or substituted by one or more groups selected from halogen, haloalkyl, hydroxy, alkoxy carbonyl, amido, alkylamido, dialkylamido, nitro, amino, alkylamino, dialkylamino, carboxy or thio or thioalkyl.
  • Nonlimiting examples of aryl rings are phenyl, naphthyl, pyranyl, pyrrolyl, pyrazinyl, pyrimidinyl, pyrazolyl, pyridinyl, furanyl, thiophenyl, thiazolyl, imidazolyl, isoxazolyl, and the like.
  • a “hydroxyl” group refers to an OH group.
  • An “alkenyl” group refers to a group having at least one carbon to carbon double bond.
  • a halo group refers to F, Cl, Br or I.
  • arylalkyl refers to an alkyl bound to an aryl, wherein alkyl and aryl are as defined above.
  • An example of an aralkyl group is a benzyl group.
  • the present invention relates to the use of a SARM compound and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate, N-oxide, or combinations thereof.
  • the invention relates to the use of an analog of the SARM compound.
  • the invention relates to the use of a derivative of the SARM compound.
  • the invention relates to the use of an isomer of the SARM compound.
  • the invention relates to the use of a metabolite of the SARM compound.
  • the invention relates to the use of a pharmaceutically acceptable salt of the SARM compound.
  • the invention relates to the use of a pharmaceutical product of the SARM compound.
  • the invention relates to the use of a hydrate of the SARM compound.
  • the invention relates to the use of an N-oxide of the SARM compound.
  • isomer includes, but is not limited to, optical isomers and analogs, structural isomers and analogs, conformational isomers and analogs, and the like.
  • this invention encompasses the use of various optical isomers of the SARM compound.
  • the SARMs of the present invention contain at least one chiral center. Accordingly, the SARMs used in the methods of the present invention may exist in, and be isolated in, optically-active or racemic forms. Some compounds may also exhibit polymorphism. It is to be understood that the present invention encompasses any racemic, optically-active, polymorphic, or stereroisomeric form, or mixtures thereof, which form possesses properties useful in the treatment of androgen-related conditions described herein.
  • the SARMs are the pure (R)-isomers. In another embodiment, the SARMs are the pure (S)-isomers.
  • the SARMs are a mixture of the (R) and the (S) isomers. In another embodiment, the SARMs are a racemic mixture comprising an equal amount of the (R) and the (S) isomers. It is well known in the art how to prepare optically-active forms (for example, by resolution of the racemic form by recrystallization techniques, by synthesis from optically-active starting materials, by chiral synthesis, or by chromatographic separation using a chiral stationary phase).
  • the invention includes pharmaceutically acceptable salts of amino-substituted compounds with organic and inorganic acids, for example, citric acid and hydrochloric acid.
  • the invention also includes N-oxides of the amino substituents of the compounds described herein.
  • Pharmaceutically acceptable salts can also be prepared from the phenolic compounds by treatment with inorganic bases, for example, sodium hydroxide.
  • esters of the phenolic compounds can be made with aliphatic and aromatic carboxylic acids, for example, acetic acid and benzoic acid esters.
  • This invention further includes derivatives of the SARM compounds.
  • derivatives includes but is not limited to ether derivatives, acid derivatives, amide derivatives, ester derivatives and the like.
  • this invention further includes hydrates of the SARM compounds.
  • hydrate includes but is not limited to hemihydrate, monohydrate, dihydrate, trihydrate and the like.
  • This invention further includes metabolites of the SARM compounds.
  • metabolites of the SARM compounds means any substance produced from another substance by metabolism or a metabolic process.
  • This invention further includes pharmaceutical products of the SARM compounds.
  • pharmaceutical product means a composition suitable for pharmaceutical use (pharmaceutical composition), as defined herein.
  • the compounds provided herein are a new subclass of compounds which are selective androgen receptor modulators (SARM) which are useful for oral testosterone replacement therapy which have an unexpected in-vivo activity for an androgenic and anabolic activity of a nonsteroidal ligand for the androgen receptor. Further, appropriately substituted compounds are effective to treat prostate cancer and are useful for imaging of prostate cancer.
  • SARM compounds demonstrate an in-vivo androgenic and anabolic activity of a nonsteroidal ligand for the androgen receptor.
  • the appropriately substituted SARM compounds of the present invention are useful for a) male contraception; b) treatment of a variety of hormone-related conditions, for example conditions associated with Androgen Decline in Aging Male (ADAM), such as fatigue, depression, decreased libido, sexual dysfunction, erectile dysfunction, hypogonadism, osteoporosis, hair loss, anemia, obesity, sarcopenia, osteopenia,osteoporosis, benign prostate hyperplasia, alterations in mood and cognition and prostate cancer; c) treatment of conditions associated with ADIF, such as sexual dysfunction, decreased sexual libido, hypogonadism, sarcopenia, osteopenia, osteoporosis, alterations in cognition and mood, depression, anemia, hair loss, obesity, endometriosis, breast cancer, uterine cancer and ovarian cancer; d) treatment and/or prevention of acute and/or chronic muscular wasting conditions; e) preventing and/or treating dry
  • ADAM And
  • cell signaling receptors receptors for extracellular signaling molecules are collectively referred to as “cell signaling receptors”.
  • Many cell signaling receptors are transmembrane proteins on a cell surface; when they bind an extracellular signaling molecule (i.e., a ligand), they become activated so as to generate a cascade of intracellular signals that alter the behavior of the cell.
  • the receptors are inside the cell and the signaling ligand has to enter the cell to activate them; these signaling molecules therefore must be sufficiently small and hydrophobic to diffuse across the plasma membrane of the cell.
  • Steroid hormones are one example of small hydrophobic molecules that diffuse directly across the plasma membrane of target cells and bind to intracellular cell signaling receptors. These receptors are structurally related and constitute the intracellular receptor superfamily (or steroid-hormone receptor superfamily). Steroid hormone receptors include progesterone receptors, estrogen receptors, androgen receptors, glueocorticoid receptors, and mineralocorticoid receptors. The present invention is particularly directed to androgen receptors.
  • the receptors can be blocked to prevent ligand binding.
  • affinity If the affinity of a substance is greater than the original hormone, it will compete with the hormone and bind the binding site more frequently.
  • signals may be sent through the receptor into the cells, causing the cell to respond in some fashion. This is called activation.
  • the activated receptor On activation, the activated receptor then directly regulates the transcription of specific genes. But the substance and the receptor may have certain attributes, other than affinity, in order to activate the cell. Chemical bonds between atoms of the substance and the atoms of the receptors may form. In some cases, this leads to a change in the configuration of the receptor, which is enough to begin the activation process (called signal transduction).
  • the present invention is directed to selective androgen receptor modulator compounds which are agonist compounds.
  • a receptor agonist is a substance which binds receptors and activates them.
  • the SARM compounds of the present invention are useful in binding to and activating steroidal hormone receptors.
  • the agonist compound of the present invention is an agonist which binds the androgen receptor.
  • the compound has high affinity for the androgen receptor.
  • the agonist compound also has anabolic activity.
  • the present invention provides selective androgen modulator compounds which have agonistic and anabolic activity of a nonsteroidal compound for the androgen receptor.
  • other selective androgen receptor modulator compounds are antagonist compounds.
  • a receptor antagonist is a substance which binds receptors and inactivates them.
  • the SARM compounds of the present invention are useful in binding to and inactivating steroidal hormone receptors.
  • the antagonist compound of the present invention is an antagonist which binds the androgen receptor.
  • the compound has high affinity for the androgen receptor.
  • the SARM compounds of the present invention can be classified as partial AR agonist/antagonists.
  • the SARMs are AR agonists in some tissues, to cause increased transcription of AR-responsive genes (e.g. muscle anabolic effect). In other tissues, these compounds serve as inhibitors at the AR to prevent agonistic effects of the native androgens.
  • AR agonistic activity can be determined by monitoring the ability of the SARM compounds to maintain and/or stimulate the growth of AR containing tissue such as prostate and seminal vesicles, as measured by weight.
  • AR antagonistic activity can be determined by monitoring the ability of the SARM compounds to inhibit the growth of AR containing tissue.
  • the compounds of the present invention bind either reversibly or irreversibly to an androgen receptor.
  • the androgen receptor is an androgen receptor of a mammal.
  • the androgen receptor is an androgen receptor of a human.
  • the SARM compounds bind reversibly to the androgen receptor of a mammal, for example a human. Reversible binding of a compound to a receptor means that a compound can detach from the receptor after binding.
  • the SARM compounds bind irreversibly to the androgen receptor of a mammal, for example a human.
  • the compounds of the present invention may contain a functional group (e.g. affinity label) that allows alkylation of the androgen receptor (i.e. covalent bond formation).
  • the compounds are alkylating agents which bind irreversibly to the receptor and, accordingly, cannot be displaced by a steroid, such as the endogenous ligands DHT and testosterone.
  • An “alkylating agent” is defined herein as an agent which alkylates (forms a covalent bond) with a cellular component, such as DNA, RNA or enzyme. It is a highly reactive chemical that introduces alkyl radicals into biologically active molecules and thereby prevents their proper functioning.
  • the alkylating moiety is an electrophilic group that interacts with nucleophilic moieties in cellular components.
  • a method for binding the SARM compounds of the present invention to an androgen receptor by contacting the receptor with a SARM compound and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, under conditions effective to cause the selective androgen receptor modulator compound to bind the androgen receptor.
  • the binding of the selective androgen receptor modulator compounds to the androgen receptor enables the compounds of the present invention to be useful as a male contraceptive and in a number of hormone therapies.
  • the agonist compounds bind to and activate the androgen receptor.
  • the antagonist compounds bind to and inactivate the androgen receptor. Binding of the agonist or antagonist compounds is either reversible or irreversible.
  • a method for suppressing spermatogenesis in a subject by contacting an androgen receptor of the subject with a SARM compound of the present invention and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to bind the selective androgen receptor modulator compound to the androgen receptor and suppress spermatogenesis.
  • a method for contraception in a male subject comprising the step of administering to the subject a SARM compound of the present invention and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to suppress sperm production in the subject, thereby effecting contraception in the subject.
  • a method for hormonal therapy in a patient which includes contacting an androgen receptor of a patient with a SARM compound of the present invention and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to bind the selective androgen receptor modulator compound to the androgen receptor and effect a change in an androgen-dependent condition.
  • a method for hormone replacement therapy in a patient which includes contacting an androgen receptor of a patient with a SARM compound of the present invention and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to bind the selective androgen receptor modulator compound to the androgen receptor and effect a change in an androgen-dependent condition.
  • a method for treating a subject having a hormone related condition which includes administering to the subject a SARM compound of the present invention and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to bind the SARM compound to the androgen receptor and effect a change in an androgen-dependent condition.
  • Androgen-dependent conditions which may be treated according to the present invention include those conditions which are associated with aging, such as hypogonadism, sarcopenia, erythropoiesis, osteoporosis, and any other conditions later determined to be dependent upon low androgen (e.g., testosterone) levels.
  • a method for treating a subject suffering from prostate cancer comprising the step of administering to the subject a SARM compound of the- present invention and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to treat prostate cancer in the subject.
  • a method for preventing prostate cancer in a subject comprising the step of administering to the subject a SARM compound of the present invention and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to treat prevent prostate cancer in the subject.
  • a method for delaying the progression of prostate cancer in a subject suffering from prostate cancer comprising the step of administering to the subject a SARM compound of the present invention and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to delay the progression of prostate cancer in the subject.
  • a method for preventing the recurrence of prostate cancer in a subject suffering from prostate cancer comprising the step of administering to the subject a SARM compound of the present invention and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to prevent the recurrence of prostate cancer in the subject.
  • a method for treating the recurrence of prostate cancer in a subject suffering from prostate cancer comprising the step of administering to the subject a SARM compound of the present invention and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to treat the recurrence of prostate cancer in the subject.
  • a method for treating a dry eye condition in a subject suffering from dry eyes comprising the step of administering to said subject the selective androgen receptor modulator compound of formulas I-IV and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to treat dry eyes in the subject.
  • a method for preventing a dry eye condition in a subject comprising the step of administering to said subject the selective androgen receptor modulator compound of formulas I-IV and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to prevent dry eyes in the subject.
  • contacting means that the SARM compound of the present invention is introduced into a sample containing the enzyme in a test tube, flask, tissue culture, chip, array, plate, microplate, capillary, or the like, and incubated at a temperature and time sufficient to permit binding of the SARM to the enzyme.
  • Methods for contacting the samples with the SARM or other specific binding components are known to those skilled in the art and may be selected depending on the type of assay protocol to be run. Incubation methods are also standard and are known to those skilled in the art.
  • the term “contacting” means that the SARM compound of the present invention is introduced into a subject receiving treatment, and the SARM compound is allowed to come in contact with the androgen receptor in vivo.
  • the term “treating” includes preventative as well as disorder remitative treatment.
  • the terms “reducing”, “suppressing” and “inhibiting” have their commonly understood meaning of lessening or decreasing.
  • progression means increasing in scope or severity, advancing, growing or becoming worse.
  • recurrence means the return of a disease after a remission.
  • administering refers to bringing a subject in contact with a SARM compound of the present invention.
  • administration can be accomplished in vitro, i.e. in a test tube, or in vivo, i.e. in cells or tissues of living organisms, for example humans.
  • the present invention encompasses administering the compounds of the present invention to a subject.
  • libido means sexual desire.
  • erectile means capable of being erected.
  • An erectile tissue is a tissue, which is capable of being greatly dilated and made rigid by the distension of the numerous blood vessels which it contains.
  • Hypogonadism is a condition resulting from or characterised by abnormally decreased functional activity of the gonads, with retardation of growth and sexual development.
  • Oleopenia refers to decreased calcification or density of bone. This is a term which encompasses all skeletal systems in which such a condition is noted.
  • Osteoporosis refers to a thinning of the bones with reduction in bone mass due to depletion of calcium and bone protein. Osteoporosis predisposes a person to fractures, which are often slow to heal and heal poorly. Unchecked osteoporosis can lead to changes in posture, physical abnormality, and decreased mobility.
  • BPH benign prostate hyperplasia
  • the obstruction of urinary flow can also lead to a general lack of control over urination, including difficulty initiating urination when desired, as well as difficulty in preventing urinary flow because of the inability to empty urine from the bladder, a condition known as overflow urinary incontinence, which can lead to urinary obstruction and to urinary failure.
  • Cognition refers to the process of knowing, specifically the process of being aware, knowing, thinking, learning and judging. Cognition is related to the fields of psychology, linguistics, computer science, neuroscience, mathematics, ethology and philosophy. The term “mood” refers to a temper or state of the mind. As contemplated herein, alterations means any change for the positive or negative, in cognition and/or mood.
  • depression refers to an illness that involves the body, mood and thoughts, that affects the way a person eats, sleeps and the way one feels about oneself, and thinks about things.
  • the signs and symptoms of depression include loss of interest in activities, loss of appetite or overeating, loss of emotional expression, an empty mood, feelings of hopelessness, pessimism, guilt or helplessness, social withdrawal, fatigue, sleep disturbances, trouble concentrating, remembering, or making decisions, restlessness, irritability, headaches, digestive disorders or chronic pain.
  • hair loss medically known as alopecia, refers to baldness as in the very common type of male-pattern baldness. Baldness typically begins with patch hair loss on the scalp and sometimes progresses to complete baldness and- even loss of body hair. Hair loss affects both males and females.
  • Anemia refers to the condition of having less than the normal number of red blood cells or less than the normal quantity of hemoglobin in the blood. The oxygen-carrying capacity of the blood is, therefore, decreased. Persons with anemia may feel tired and fatigue easily, appear pale, develop palpitations and become usually short of breath. Anemia is caused by four basic factors: a) hemorrhage (bleeding); b) hemolysis (excessive destruction of red blood cells); c) underproduction of red blood cells; and d) not enough normal hemoglobin.
  • anemia there are many forms of anemia, including aplastic anemia, benzene poisoning, Fanconi anemia, hemolytic disease of the newborn, hereditary spherocytosis, iron deficiency anemia, osteopetrosis, pernicious anemia, sickle cell disease, thalassemia, myelodysplastic syndrome, and a variety of bone marrow diseases.
  • the SARM compounds of the present invention are useful in preventing and/or treating any one or more of the above-listed forms of anemia.
  • Obesity refers to the state of being well above one's normal weight. Traditionally, a person is considered to be obese if they are more than 20 percent over their ideal weight. Obesity has been more precisely defined by the National Institute of Health (NIH) as a Body to Mass Index (BMI) of 30 or above. Obesity is often multifactorial, based on both genetic and behavioral factors. Overweight due to obesity is a significant contributor to health problems.
  • NASH National Institute of Health
  • BMI Body to Mass Index
  • Type 2 diabetes adult-onset diabetes; high blood pressure (hypertension); stroke (cerebrovascular accident or CVA); heart attack (myocardial infarction or MI); heart failure (congestive heart failure); cancer (certain forms such as cancer of the prostate and cancer of the colon and rectum); gallstones and gallbladder disease (cholecystitis); Gout and gouty arthritis; osteoarthritis (degenerative arthritis) of the knees, hips, and the lower back; sleep apnea (failure to breath normally during sleep, lowering blood oxygen); and Pickwickian syndrome (obesity, red face, underventilation and drowsiness).
  • the term “obesity” includes any one of the above-listed obesity-related conditions and diseases.
  • SARM compounds of the present invention are useful in preventing and/or treating obesity and any one or more of the above-listed obesity-related conditions and diseases.
  • Prostate cancer is one of the most frequently occurring cancers among men in the United States, with hundreds of thousands of new cases diagnosed each year. Over sixty percent of newly diagnosed cases of prostate cancer are found to be pathologically advanced, with no cure and a dismal prognosis.
  • One third of all men over 50 years of age have a latent form of prostate cancer that may be activated into the life-threatening clinical prostate cancer form.
  • the frequency of latent prostatic tumors has been shown to increase substantially with each decade of life from the 50s (5.3-14%) to the 90s (40-80%).
  • the number of people with latent prostate cancer is the same across all cultures, ethnic groups, and races, yet the frequency of clinically aggressive cancer is markedly different. This suggests that environmental factors may play a role in activating latent prostate cancer.
  • the methods of the present invention comprise administering a SARM compound as the sole active ingredient.
  • methods for hormone therapy, for treating prostate cancer, for delaying the progression of prostate cancer, and for preventing and/or treating the recurrence of prostate cancer which comprise administering the SARM compounds in combination with one or more therapeutic agents.
  • agents include, but are not limited to: LHRH analogs, reversible antiandrogens, antiestrogens, anticancer drugs, 5-alpha reductase inhibitors, aromatase inhibitors, progestins, agents acting through other nuclear hormone receptors, selective estrogen receptor modulators (SERM), progesterone, estrogen, PDE5 inhibitors, apomorphine, bisphosphonate, and one or more additional SARMS.
  • LHRH analogs reversible antiandrogens, antiestrogens, anticancer drugs, 5-alpha reductase inhibitors, aromatase inhibitors, progestins, agents acting through other nuclear hormone receptors, selective estrogen receptor modulators (SERM), progesterone, estrogen, PDE5 inhibitors, apomorphine, bisphosphonate, and one or more additional SARMS.
  • SERM selective estrogen receptor modulators
  • the methods of the present invention comprise administering the selective androgen receptor modulator compound, in combination with an LHRF analog.
  • the methods of the present invention comprise administering a selective androgen receptor modulator compound, in combination with a reversible antiandrogen.
  • the methods of the present invention comprise administering a selective androgen receptor modulator compound, in combination with an antiestrogen.
  • the methods of the present invention comprise administering a selective androgen receptor modulator compound, in combination with an anticancer drug.
  • the methods of the present invention comprise administering a selective androgen receptor modulator compound, in combination with a 5-alpha reductase inhibitor.
  • the methods of the present invention comprise administering a selective androgen receptor modulator compound, in combination with an aromatase inhibitor. In another embodiment, the methods of the present invention comprise administering a selective androgen receptor modulator compound, in combination with a progestin. In another embodiment, the methods of the present invention comprise administering a selective androgen receptor modulator compound, in combination with an agent acting through other nuclear hormone receptors. In another embodiment, the methods of the present invention comprise administering a selective androgen receptor modulator compound, in combination with a selective estrogen receptor modulators (SERM). In another embodiment, the methods of the present invention comprise administering a selective androgen receptor modulator compound, in combination with a progesterone.
  • SERM selective estrogen receptor modulators
  • the methods of the present invention comprise administering a selective androgen receptor modulator compound, in combination with an estrogen. In another embodiment, the methods of the present invention comprise administering a selective androgen receptor modulator compound, in combination with a PDE5 inhibitor. In another embodiment, the methods of the present invention comprise administering a selective androgen receptor modulator compound, in combination with apomorphine. In another embodiment, the methods of the present invention comprise administering a selective androgen receptor modulator compound, in combination with a bisphosphonate. In another embodiment, the methods of the present invention comprise administering a selective androgen receptor modulator compound, in combination with one or more additional SARMS.
  • the present invention provides a composition and a pharmaceutical composition
  • a composition and a pharmaceutical composition comprising the selective androgen receptor modulator compound of any of formulas I-VI and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof; and a suitable carrier or diluent.
  • pharmaceutical composition means therapeutically effective amounts of the SARM together with suitable diluents, preservatives, solubilizers, emulsifiers, adjuvant and/or carriers.
  • a “therapeutically effective amount” as used herein refers to that amount which provides a therapeutic effect for a given condition and administration regimen.
  • compositions are liquids or Lyophilized or otherwise dried formulations and include diluents of various buffer content (e.g., Tris-HCI., acetate, phosphate), pH and ionic strength, additives such as albumin or gelatin to prevent absorption to surfaces, detergents (e.g., Tween 20, Tween 80, Pluronic F68, bile acid salts), solubilizing agents (e.g., glycerol, polyethylene glycerol), anti-oxidants (e.g., ascorbic acid, sodium metabisulfite), preservatives (e.g., Thimerosal, benzyl alcohol, parabens), bulking substances or tonicity modifiers (e.g., lactose, mannitol), covalent attachment of polymers such as polyethylene glycol to the protein, complexation with metal ions, or incorporation of the material into or onto particulate preparations of polymeric compounds such as polylactic acid, polglycolic acid,
  • compositions coated with polymers e.g., poloxamers or poloxamines.
  • Other embodiments of the compositions of the invention incorporate particulate forms protective coatings, protease inhibitors or permeation enhancers for various routes of administration, including parenteral, pulmonary, nasal and oral.
  • the pharmaceutical composition is administered parenterally, paracancerally, transmucosally, transdermally, intramuscularly, intravenously, intradermally, subcutaneously, intravaginally, intraperitonealy, intraventricularly, intracranially or intratumorally.
  • pharmaceutically acceptable carriers are well known to those skilled in the art and include, but are not limited to, 0.01-0.1M and preferably 0.05M phosphate buffer or 0.8% saline. Additionally, such pharmaceutically acceptable carriers may be aqueous or non-aqueous solutions, suspensions, and emulsions. Examples of non-aqueous solvents are propylene glycol, polyethylene glycol, vegetable oils such as olive oil, and injectable organic esters such as ethyl oleate. Aqueous carriers include water, alcoholic/aqueous solutions, emulsions or suspensions, including saline and buffered media.
  • Parenteral vehicles include sodium chloride solution, Ringer's dextrose, dextrose and sodium chloride, lactated Ringer's and fixed oils.
  • Intravenous vehicles include fluid and nutrient replenishers, electrolyte replenishers such as those based on Ringer's dextrose, and the like. Preservatives and other additives may also be present, such as, for example, antimicrobials, antioxidants, collating agents, inert gases and the like.
  • Controlled or sustained release compositions include formulation in lipophilic depots (e.g. fatty acids, waxes, oils). Also comprehended by the invention are particulate compositions coated with polymers (e.g. poloxamers or poloxamines) and the compound coupled to antibodies directed against tissue-specific receptors, ligands or antigens or coupled to ligands of tissue-specific receptors.
  • lipophilic depots e.g. fatty acids, waxes, oils.
  • particulate compositions coated with polymers e.g. poloxamers or poloxamines
  • compositions of the invention incorporate particulate forms, protective coatings, protease inhibitors or permeation enhancers for various routes of administration, including parenteral, pulmonary, nasal and oral.
  • the pharmaceutical composition can be delivered in a controlled release system.
  • the agent may be administered using intravenous infusion, an implantable osmotic pump, a transdermal patch, liposomes, or other modes of administration.
  • a pump may be used (see Langer, supra; Sefton, CRC Crit. Ref. Biomed. Eng. 14:201 (1987); Buchwald et al., Surgery 88:507 (1980); Saudek et al., N. Engl. J. Med. 321:574 (1989).
  • polymeric materials can be used.
  • a controlled release system can be placed in proximity to the therapeutic target, i.e., the brain, thus requiring only a fraction of the systemic dose (see, e.g., Goodson, in Medical Applications of Controlled Release, supra, vol. 2, pp. 115-138 (1984). Other controlled release systems are discussed in the review by Langer (Science 249:1527-1533 (1990).
  • the pharmaceutical preparation can comprise the SARM agent alone, or can further include a pharmaceutically acceptable carrier and can be in solid or liquid form such as tablets, powders, capsules, pellets, solutions, suspensions, elixs, emulsions, gels, creams, or suppositories, including rectal and urethral suppositories.
  • Pharmaceutically acceptable carriers include gums, starches, sugars, cellulosic materials, and mixtures thereof.
  • the pharmaceutical preparation containing the SARM agent can be administered to a subject by, for example, subcutaneous implantation of a pellet; in one embodiment, the pellet provides for controlled release of SARM agent over a period of time.
  • the preparation can also be administered by intravenous, intraarterial, or intramuscular injection of a liquid preparation, oral administration of a liquid or solid preparation, or by topical application. Administration can also be accomplished by use of a rectal suppository or a urethral suppository.
  • the pharmaceutical preparations of the invention can be prepared by known dissolving, mixing, granulating, or tablet-forming processes.
  • the SARM agents or their physiologically tolerated derivatives such as salts, esters, N-oxides, and the like are mixed with additives customary for this purpose, such as vehicles, stabilizers, or inert diluents, and converted by customary methods into suitable forms for administration, such as tablets, coated tablets, hard or soft gelatin capsules, aqueous, alcoholic or oily solutions.
  • suitable inert vehicles are conventional tablet bases such as lactose, sucrose, or cornstarch in combination with binders such as acacia, cornstarch, gelatin, with disintegrating agents such as cornstarch, potato starch, alginic acid, or with a lubricant such as stearic acid or magnesium stearate.
  • binders such as acacia, cornstarch, gelatin
  • disintegrating agents such as cornstarch, potato starch, alginic acid, or with a lubricant such as stearic acid or magnesium stearate.
  • suitable oily vehicles or solvents are vegetable or animal oils such as sunflower oil or fish-liver oil. Preparations can be effected both as dry and as wet granules.
  • the SARM agents or their physiologically tolerated derivatives such as salts, esters, N-oxides, and the like are converted into a solution, suspension, or emulsion, if desired with the substances customary and suitable for this purpose, for example, solubilizers or other auxiliaries.
  • sterile liquids such as water and oils, with or without the addition of a surfactant and other pharmaceutically acceptable adjuvants.
  • Illustrative oils are those of petroleum, animal, vegetable, or synthetic origin, for example, peanut oil, soybean oil, or mineral oil.
  • water, saline, aqueous dextrose and related sugar solutions, and glycols such as propylene glycols or polyethylene glycol are preferred liquid carriers, particularly for injectable solutions.
  • compositions which contain an active component are well understood in the art.
  • such compositions are prepared as aerosols of the polypeptide delivered to the nasopharynx or as injectables, either as liquid solutions or suspensions; however, solid forms suitable for solution in, or suspension in, liquid prior to injection can also be prepared.
  • the preparation can also be emulsified.
  • the active therapeutic ingredient is often mixed with excipients which are pharmaceutically acceptable and compatible with the active ingredient. Suitable excipients are, for example, water, saline, dextrose, glycerol, ethanol, or the like or any combination thereof.
  • composition can contain minor amounts of auxiliary substances such as wetting or emulsifying agents, pH buffering agents which enhance the effectiveness of the active ingredient.
  • auxiliary substances such as wetting or emulsifying agents, pH buffering agents which enhance the effectiveness of the active ingredient.
  • compositions can be formulated into the composition as neutralized pharmaceutically acceptable salt forms.
  • Pharmaceutically acceptable salts include the acid addition salts (formed with the free amino groups of the polypeptide or antibody molecule), which are formed with inorganic acids such as, for example, hydrochloric or phosphoric acids, or such organic acids as acetic, oxalic, tartaric, mandelic, and the like. Salts formed from the free carboxyl groups can also be derived from inorganic bases such as, for example, sodium, potassium, ammonium, calcium, or ferric hydroxides, and such organic bases as isopropylamine, trimethylamine, 2-ethylamino ethanol, histidine, procaine, and the like.
  • the SARM agents or their physiologically tolerated derivatives such as salts, esters, N-oxides, and the like can be prepared and applied as solutions, suspensions, or emulsions in a physiologically acceptable diluent with or without a pharmaceutical carrier.
  • the active compound can be delivered in a vesicle, in particular a liposome (see Langer, Science 249:1527-1533 (1990); Treat et al., in Liposomes in the Therapy of Infectious Disease and Cancer, Lopez-Berestein and Fidler (eds.), Liss, New York, pp. 353-365 (1989); Lopez-Berestein, ibid., pp. 317-327; see generally ibid).
  • a liposome see Langer, Science 249:1527-1533 (1990); Treat et al., in Liposomes in the Therapy of Infectious Disease and Cancer, Lopez-Berestein and Fidler (eds.), Liss, New York, pp. 353-365 (1989); Lopez-Berestein, ibid., pp. 317-327; see generally ibid).
  • the salts of the SARM may be pharmaceutically acceptable salts.
  • Other salts may, however, be useful in the preparation of the compounds according to the invention or of their pharmaceutically acceptable salts.
  • Suitable pharmaceutically acceptable salts of the compounds of this invention include acid addition salts which may, for example, be formed by mixing a solution of the compound according to the invention with a solution of a pharmaceutically acceptable acid such as hydrochloric acid, sulphuric acid, methanesulphonic acid, fumaric acid, maleic acid, succinic acid, acetic acid, benzoic: acid, oxalic acid, citric acid, tartaric acid, carbonic acid or phosphoric acid.
  • a pharmaceutically acceptable acid such as hydrochloric acid, sulphuric acid, methanesulphonic acid, fumaric acid, maleic acid, succinic acid, acetic acid, benzoic: acid, oxalic acid, citric acid, tartaric acid, carbonic acid or phosphoric acid.
  • Binding affinities of select B-ring halogenated SARMS were determined and are represented in Table 1:
  • Rats were randomly distributed into treatment groups groups. One day prior to the start of drug treatment, animals were individually removed from the cage, weighed and anesthetized with an intraperitoneal dose of ketamine/xylazine (87/13 mg/kg; approximately 1 mL per kg). When appropriately anesthetized (i.e., no response to toe pinch), the animals' ears were marked for identification purposes. Animals were then placed on a sterile pad and their abdomen and scrotum washed with betadine and 70% alcohol. The testes were removed via a midline scrotal incision, with sterile suture being used to ligate supra-testicular tissue prior to surgical removal of each testis. The surgical wound site was closed with sterile stainless steel wound clips, and the site cleaned with betadine. The animals were allowed to recover on a sterile pad (until able to stand) and then returned to their cage.
  • ketamine/xylazine 87/13 mg/kg; approximately 1 mL per
  • Osmotic pumps contained the appropriate treatment dissolved in polyethylene glycol 300 (PEG300). Osmotic pumps were filled with the appropriate solution one day prior to implantation. Animals were monitored daily for signs of acute toxicity to drug treatment (e.g., lethargy, rough coat).
  • the weights of all organs were normalized to body weight, and analyzed for any statistical significant difference by single-factor ANOVA.
  • the weights of prostate and seminal vesicle were used as indexes for evaluation of androgenic activity, and the levator ani muscle weight was used to evaluate the anabolic activity.
  • FIGS. 1A-D The androgenic and anabolic activities of compounds 1-4 were examined in a castrated rat model after 14 days of administration. The results are shown in FIGS. 1A-D as a percent of the Intact Control (not castrated, untreated). 0 mg/day denotes Castrated Controls (castrated, untreated).
  • the weights of prostate, seminal vesicle, and levator ani muscle in castrated rats decreased significantly, due to the ablation of endogenous androgen production.
  • Treatment with increasing dosages of compounds 1-4 resulted in a tissue-selective increase in levator ani muscle weights, with little or no stimulation of prostate and seminal vesicle growth (i.e. the prostate and seminal vesicle weights were less than 40% of that observed in intact animals for compound 2, and less than 20% for compounds 1, 3 and 4).
  • compounds 1-4 are potent nonsteroidal anabolic agents. This is a significant improvement over previous compounds, in that these compound selectively stimulate muscle growth and other anabolic effects while having less effect on the prostate and seminal vesicles. This may be particularly relevant in aging men with concerns related to the development or progression of prostate cancer.
  • the binding affinity of select compound 5 is represented in Table 2:
  • compound 5 demonstrated tissue-selective pharmacological effects in castrated male rats, with higher efficacy in anabolic tissues (i.e. levator ani) as compared to androgenic tissues (i.e. prostate and seminal vesicles).
  • Compound 5 demonstrated little pharmacologic activity in the prostate (8.7 ⁇ 1.39% of intact at 1.0 mg/day dose) and seminal vesicles (10.7 ⁇ 0.91% of intact at 1.0 mg/day dose), suggesting that it acts as a weak partial agonist in these tissues.
  • compound 5 demonstrates highly efficacious anabolic activity at 1.0 mg/day dose, returning the levator ani muscle to 75.2 ⁇ 9.51% of that observed in intact animals.
  • the binding affinitiy of select compound 6 is represented in Table 4:
  • the weights of prostate, seminal vesicle, and levator ani muscle in castrated, vehicle-treated rats decreased significantly, due to the ablation of endogenous androgen production.
  • Exogenous administration of testosterone propionate, an androgenic and anabolic steroid increased the weights of prostate, seminal vesicle, and levator ani muscle in castrated rats in a dose-dependent manner.
  • Treatment with compound 6 resulted in dose-dependent increases in prostate, seminal vesicle and levator ani muscle weights.
  • compound 6 Compared with testosterone propionate, compound 6 showed lower potency and intrinsic activity in increasing the weights of prostate and seminal vesicle, but a greater potency and intrinsic activity in increasing the weight of levator ani muscle. Particularly, compound V, at a dose as low as 0.3 mg/day, was able to maintain the levator ani muscle weight of castrated animals in the same level as that of intact animals. Thus, compound 6 is a potent nonsteroidal anabolic agent with less androgenic activity but more anabolic activity than testosterone propionate. As in compounds 1-5 above, this is a significant improvement in that this compound selectively stimulates muscle growth and other anabolic effects while having less effect on the prostate and seminal vesicles.

Abstract

This invention provides a class of androgen receptor targeting agents (ARTA). The agents define a new subclass of compounds, which are selective androgen receptor modulators (SARM). Several of the SARM compounds have been found to have an unexpected androgenic and anabolic activity of a nonsteroidal ligand for the androgen receptor. Other SARM compounds have been found to have an unexpected antiandrogenic activity of a nonsteroidal ligand for the androgen receptor. The SARM compounds, either alone or as a composition, are useful for a) male contraception; b) treatment of a variety of hormone-related conditions, for example conditions associated with Androgen Decline in Aging Male (ADAM), such as fatigue, depression, decreased libido, sexual dysfunction, erectile dysfunction, hypogonadism, osteoporosis, hair loss, anemia, obesity, sarcopenia, osteopenia, osteoporosis, benign prostate hyperplasia, alterations in mood and cognition and prostate cancer; c) treatment of conditions associated with Androgen Decline in Female (ADIF), such as sexual dysfunction, decreased sexual libido, hypogonadism, sarcopenia, osteopenia, osteoporosis, alterations in cognition and mood, depression, anemia, hair loss, obesity, endometriosis, breast cancer, uterine cancer and ovarian cancer; d) treatment and/or prevention of acute and/or chronic muscular wasting conditions; e) preventing and/or treating dry eye conditions; f) oral androgen replacement therapy; and/or g) decreasing the incidence of, halting or causing a regression of prostate cancer.

Description

CROSS REFERENCE TO RELATED APPLICATIONS
This Application is a Continuation-in-Part Application of U.S. Ser. No. 09/935,045, filed Aug. 23, 2001 now U.S. Pat. No. 6,569,896 and U.S. Ser. No. 10/270,732, filed Oct. 16, 2002, which claim priority of U.S. Ser. No. 60/300,083, filed Jun. 25, 2001, and U.S. Ser. No. 09/644,970, filed Aug. 24, 2000, which was converted in Provisional Application Ser. No. 60/367,355, filed Aug. 24, 2000 which are hereby incorporated by reference.
GOVERNMENT INTEREST STATEMENT
This invention was made in whole or in part with government support under grant number R29 CA068096 awarded by the National Cancer Institute, National Institute of Health, and under grant number R15 HD35329, awarded by the National Institute of Child Health and Human Development, National Institute of Health. The government may have certain rights in the invention.
FIELD OF INVENTION
The present invention relates to a novel class of androgen receptor targeting agents (ARTA), which demonstrate androgenic and anabolic activity of a nonsteroidal ligand for the androgen receptor. The agents define a new subclass of compounds, which are selective androgen receptor modulators (SARMs) useful for a) male contraception; b) treatment of a variety of hormone-related conditions, for example conditions associated with Androgen Decline in Aging Male (ADAM); c) treatment of conditions associated with Androgen Decline in Female (ADIF), d) treatment and/or prevention of acute and/or chronic muscular wasting conditions; e) preventing and/or treating dry eye conditions; f) oral androgen replacement therapy; and/or g) decreasing the incidence of, halting or causing a regression of prostate cancer.
BACKGROUND OF THE INVENTION
The androgen receptor (“AR”) is a ligand-activated transcriptional regulatory protein that mediates induction of male sexual development and function through its activity with endogenous androgens. Androgens are generally known as the male sex hormones. The androgenic hormones are steroids which are produced in the body by the testes and the cortex of the adrenal gland or can be synthesized in the laboratory. Androgenic steroids play an important role in many physiologic processes, including the development and maintenance of male sexual characteristics such as muscle and bone mass, prostate growth, spermatogenesis, and the male hair pattern (Matsumoto, Endocrinol. Met. Clin. N. Am. 23:857-75 (1994)). The endogenous steroidal androgens include testosterone and dihydrotestosterone (“DHT”). Testosterone is the principal steroid secreted by the testes and is the primary circulating androgen found in the plasma of males. Testosterone is converted to DHT by the enzyme 5 alpha-reductase in many peripheral tissues. DHT is thus thought to serve as the intracellular mediator for most androgen actions (Zhou, et al., Molec. Endocrinol. 9:208-18 (1995)). Other steroidal androgens include esters of testosterone, such as the cypionate, propionate, phenylpropionate, cyclopentylpropionate, isocarporate, enanthate, and decanoate esters, and other synthetic androgens such as 7-Methyl-Nortestosterone (“MENT”) and its acetate ester (Sundaram et al., “7 Alpha-Methyl-Nortestosterone(MENT): The Optimal Androgen For Male Contraception,” Ann. Med., 25:199-205 (1993) (“Sundaram”)). Because the AR is involved in male sexual development and function, the AR is a likely target for effecting male contraception or other forms of hormone replacement therapy.
Worldwide population growth and social awareness of family planning have stimulated a great deal of research in contraception. Contraception is a difficult subject under any circumstance. It is fraught with cultural and social stigma, religious implications, and, most certainly, significant health concerns. This situation is only exacerbated when the subject focuses on male contraception. Despite the availability of suitable contraceptive devices, historically, society has looked to women to be responsible for contraceptive decisions and their consequences. Although concern over sexually transmitted diseases has made men more aware of the need to develop safe and responsible sexual habits, women still often bear the brunt of contraceptive choice. Women have a number of choices, from temporary mechanical devices such as sponges and diaphragms to temporary chemical devices such as spermicides. Women also have at their disposal more permanent options, such as physical devices including IUDs and cervical caps as well as more permanent chemical treatments such as birth control pills and subcutaneous implants. However, to date, the only options available for men include the use of condoms and vasectomy. Condom use, however is not favored by many men because of the reduced sexual sensitivity, the interruption in sexual spontaneity, and the significant possibility of pregnancy caused by breakage or misuse. Vasectomies are also not favored. If more convenient methods of birth control were available to men, particularly long-term methods which require no preparative activity immediately prior to a sexual act, such methods could significantly increase the likelihood that men would take more responsibility for contraception.
Administration of the male sex steroids (e.g., testosterone and its derivatives) has shown particular promise in this regard due to the combined gonadotropin-suppressing and androgen-substituting properties of these compounds (Steinberger et al., “Effect of Chronic Administration of Testosterone Enanthate on Sperm Production and Plasma Testosterone, Follicle Stimulating Hormone, and Luteinizing Hormone Levels: A Preliminary Evaluation of a Possible Male Contraceptive, Fertility and Sterility 28:1320-28 (1977)). Chronic administration of high doses of testosterone completely abolishes sperm production (azoospermia) or reduces it to a very low level (oligospermia). The degree of spermatogenic suppression necessary to produce infertility is not precisely known. However, a recent report by the World Health Organization showed that weekly intramuscular injections of testosterone enanthate result in azoospermia or severe oligospermia (i.e., less than 3 million sperm per ml) and infertility in 98% of men receiving therapy (World Health Organization Task Force on Methods And Regulation of Male Fertility, “Contraceptive Efficacy of Testosterone-Induced Azoospermia and Oligospermia in Normal Men,” Fertility and Sterility 65:821-29 (1996)).
A variety of testosterone esters have been developed which are more slowly absorbed after intramuscular injection and thus result in greater androgenic effect. Testosterone enanthate is the most widely used of these esters. While testosterone enanthate has been valuable in terms of establishing the feasibility of hormonal agents for male contraception, it has several drawbacks, including the need for weekly injections and the presence of supraphysiologic peak levels of testosterone immediately following intramuscular injection (Wu, “Effects of Testosterone Enanthate in Normal Men: Experience From a Multicenter Contraceptive Efficacy Study,” Fertility and Sterility 65:626-36 (1996)).
Steroidal ligands which bind the AR and act as androgens (e.g. testosterone enanthate) or as antiandrogens (e.g. cyproterone acetate) have been known for many years and are used clinically (Wu 1988). Although nonsteroidal antiandrogens are in clinical use for hormone-dependent prostate cancer, nonsteroidal androgens have not been reported. For this reason, research on male contraceptives,has focused solely on steroidal compounds.
Prostate cancer is one of the most frequently occurring cancers among men in the United States, with hundreds of thousands of new cases diagnosed each year. Unfortunately, over sixty percent of newly diagnosed cases of prostate cancer are found to be pathologically advanced, with no cure and a dismal prognosis. One approach to this problem is to find prostate cancer earlier through screening programs and thereby reduce the number of advanced prostate cancer patients. Another strategy, however, is to develop drugs to prevent prostate cancer. One third of all men over 50 years of age have a latent form of prostate cancer that may be activated into the life-threatening clinical prostate cancer form. The frequency of latent prostatic tumors has been shown to increase substantially with each decade of life from the 50s (5.3-14%) to the 90s (40-80%). The number of people with latent prostate cancer is the same across all cultures, ethnic groups, and races, yet the frequency of clinically aggressive cancer is markedly different. This suggests that environmental factors may play a role in activating latent prostate cancer. Thus, the development of treatment and preventative strategies against prostate cancer may have the greatest overall impact both medically and economically against prostate cancer.
Osteoporosis is a systemic skeletal disease, characterized by low bone mass and deterioration of bone tissue, with a consequent increase in bone fragility and susceptibility to fracture. In the U.S., the condition affects more than 25 million people and causes more than 1.3 million fractures each year, including 500,000 spine, 250,000 hip and 240,000 wrist fractures annually. Hip fractures are the most serious consequence of osteoporosis, with 5-20% of patients dying within one year, and over 50% of survivors being incapacitated. The elderly are at greatest risk of osteoporosis, and the problem is therefore predicted to increase significantly with the aging of the population. Worldwide fracture incidence is forecasted to increase three-fold over the next 60 years, and one study estimated that there will be 4.5 million hip fractures worldwide in 2050.
Women are at greater risk of osteoporosis than men. Women experience a sharp acceleration of bone loss during the five years following menopause. Other factors that increase the risk include smoking, alcohol abuse, a sedentary lifestyle and low calcium intake. However, osteoporosis also occurs frequently in males. It is well established that the bone mineral density of males decrease with age. Decreased amounts of bone mineral content and density correlates with decreased bone strength, and predisposes to fracture. The molecular mechanisms underlying the pleiotropic effects of sex-hormones in non-reproductive tissues are only beginning to be understood, but it is clear that physiologic concentrations of androgens and estrogens play an important role in maintaining bone homeostasis throughout the life-cycle. Consequently, when androgen or estrogen deprivation occurs there is a resultant increase in the rate of bone remodeling that tilts the balance of resorption and formation to the favor of resorption that contributes to the overall loss of bone mass. In males, the natural decline in sex-hormones at maturity (direct decline in androgens as well as lower levels of estrogens derived from peripheral aromatization of androgens) is associated with the frailty of bones. This effect is also observed in males who have been castrated.
Androgen decline in the aging male (ADAM) refers to a progressive decrease in androgen production, common in males after middle age. The syndrome is characterized by alterations in the physical and intellectual domains that correlate with and can be corrected by manipulation of the androgen milieu. ADAM is characterized biochemically by a decrease not only in serum androgen, but also in other hormones, such as growth hormone, melatonin and dehydroepiandrosterone. Clinical manifestations include fatigue, depression, decreased libido, sexual dysfunction, erectile dysfunction, hypogonadism, osteoporosis, hair loss, obesity, sarcopenia, osteopenia, benign prostate hyperplasia, anemia, alterations in mood and cognition and prostate cancer.
Androgen Deficiency in Female (ADIF) refers to a variety of hormone-related conditions including, common in females after middle agest. The syndrome is characterized by sexual dysfunction, decreased sexual libido, hypogonadism, sarcopenia, osteopenia, osteoporosis, alterations in cognition and mood, anemia, depression, anemia, hair loss, obesity, endometriosis, breast cancer, uterine cancer and ovarian cancer.
Muscle wasting refers to the progressive loss of muscle mass and/or to the progressive weakening and degeneration of muscles, including the skeletal or voluntary muscles, which control movement, cardiac muscles, which control the heart (cardiomyopathics), and smooth muscles. Chronic muscle wasting is a chronic condition (i.e. persisting over a long period of time) characterized by progressive loss of muscle mass, weakening and degeneration of muscle. The loss of muscle mass that occurs during muscle wasting can be characterized by a muscle protein breakdown or degradation. Protein degradation occurs because of an unusually high rate of protein degradation, an unusually low rate of protein synthesis, or a combination of both. Protein degradation, whether caused by a high degree of protein degradation or a low degree of protein synthesis, leads to a decrease in muscle mass and to muscle wasting. Muscle wasting is associated with chronic, neurological, genetic or infectious pathologies, diseases, illnesses or conditions. These include Muscular Dystrophies such as Duchenne Muscular Dystrophy and Myotonic Dystrophy; Muscle Atrophies such as Post-Polio Muscle Atrophy (PMA); Cachexias such as Cardiac Cachexia, AIDS Cachexia and Cancer Cachexia, malnutrition, Leprosy, Diabetes, Renal Disease, Chronic Obstructive Pulmonary Disease (COPD), Cancer, end stage Renal failure, Emphysema, Osteomalacia, HIV Infection, AIDS, and Cardiomyopathy, In addition, other circumstances and conditions are linked to and can cause muscle wasting. These include chronic lower back pain, advanced age, central nervous system (CNS) injury, peripheral nerve injury, spinal cord injury, chemical injury, central nervous system (CNS) damage, peripheral nerve damage, spinal cord damage, chemical damage, burns, disuse deconditioning that occurs when a limb is immobilized, long term hospitalization due to illness or injury, and alcoholism. Muscle wasting, if left unabated, can have dire health consequences. For example, the changes that occur during muscle wasting can lead to a weakened physical state that is detrimental to an individual's health, resulting in increased susceptibility to infection, poor performance status and susceptibility to injury.
New innovative approaches are urgently needed at both the basic science and clinical levels to develop compounds which are useful for a) male contraception; b) treatment of a variety of hormone-related conditions, for example conditions associated with Androgen Decline in Aging Male (ADAM), such as fatigue, depression, decreased libido, sexual dysfunction, erectile dysfunction, hypogonadism, osteoporosis, hair loss, anemia, obesity, sarcopenia, osteopenia, osteoporosis, benign prostate hyperplasia, alterations in mood and cognition and prostate cancer; c) treatment of conditions associated with ADIF, such as sexual dysfunction, decreased sexual libido, hypogonadism, sarcopenia, osteopenia, osteoporosis, alterations in cognition and mood, depression, anemia, hair loss, obesity, endometriosis, breast cancer, uterine cancer and ovarian cancer; d) treatment and/or prevention of acute and/or chronic muscular wasting conditions; e) preventing and/or treating dry eye conditions; f) oral androgen replacement therapy; and/or g) decreasing the incidence of, halting or causing a regression of prostate cancer.
SUMMARY OF THE INVENTION
In one embodiment, this invention provides a class of androgen receptor targeting agents (ARTA). The agents define a new subclass of compounds, which are selective androgen receptor modulators (SARM). Several of the SARM compounds have been found to have an unexpected androgenic and anabolic activity of a nonsteroidal ligand for the androgen receptor. Other SARM compounds have been found to have an unexpected antiandrogenic activity of a nonsteroidal ligand for the androgen receptor. The SARM compounds, either alone or as a composition, are useful for a) male contraception; b) treatment of a variety of hormone-related conditions, for example conditions associated with Androgen Decline in Aging Male (ADAM), such as fatigue, depression, decreased libido, sexual dysfunction, erectile dysfunction, hypogonadism, osteoporosis, hair loss, anemia, obesity, sarcopenia, osteopenia, osteoporosis, benign prostate hyperplasia, alterations in mood and cognition and prostate cancer; c) treatment of conditions associated with Androgen Decline in Female (ADIF), such as sexual dysfunction, decreased sexual libido, hypogonadism, sarcopenia, osteopenia, osteoporosis, alterations in cognition and mood, depression, anemia, hair loss, obesity, endometriosis, breast cancer, uterine cancer and ovarian cancer; d) treatment and/or prevention of acute and/or chronic muscular wasting conditions; e) preventing and/or treating dry eye conditions; f) oral androgen replacement therapy; and/or g) decreasing the incidence of, halting or causing a regression of prostate cancer.
In one embodiment, the present invention provides a selective androgen receptor modulator (SARM) compound represented by the structure of formula I:
Figure US07026500-20060411-C00001
wherein
    • X is O, CH2, NH, Se, PR, NO or NR;
    • T is OH, OR, —NHCOCH3, or NHCOR;
    • Z is H, F, I, Br, Cl, NO2, CN, COOH, COR, NHCOR or CONHR;
    • Y is CF3, F, I, Br, Cl, CN, CR3 or SnR3;
    • or one of Z or Y together with the benzene ring to which it is attached is a fused bicyclic carbocyclic or heterocyclic ring system;
    • Q is alkyl, F, I, Br, Cl, CF3, CN CR3, SnR3, NR2, NHCOCH3, NHCOCF3, NHCOR, NHCONH2, NHCONHR, NHCONR2, NHCOOR, OCONHR, CONHR, NHCSCH3, NHCSCF3, NHCSR, NHCSNH2, NHCSNHR, NHCSNR2, NHSO2CH3, NHSO2R, OR, COR, OCOR, OSO2R, SO2R, SR; or Q together with the benzene ring to which it is attached is a fused ring system represented by structure A, B or C:
      Figure US07026500-20060411-C00002
    • R is alkyl, haloalkyl, dihaloalkyl, trihaloalkyl, CH2F, CHF2, CF3, CF2CF3, aryl, phenyl, halogen, alkenyl or OH; and
    • R1 is CH3, CH2F, CHF2, CF3, CH2CH3, or CF2CF3
In another embodiment, the present invention provides an analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide of the compound of formula I, or any combination thereof.
In one embodiment, X in compound (I) is O. In another embodiment, Z in compound (I) is NO2. In another embodiment, Z in compound (I) is CN. In another embodiment, Z in compound (I) is H. In another embodiment, Z in compound (I) is Cl. In another embodiment, Z in compound (I) is Br. In another embodiment, Z in compound (I) is F. In another embodiment, Z in compound (I) is I. In another embodiment, Y in compound (I) is CF3. In another embodiment, Y in compound (I) is Cl. In another embodiment, Y in compound (I) is Br. In another embodiment, Y in compound (I) is F. In another embodiment, Y in compound (I) is I. In another embodiment, Q in compound (I) is NHCOCH3. In another embodiment, Q in compound (I) is F. In another embodiment, T in compound (I) is OH. In another embodiment, R1 in compound (I) is CH3. In another embodiment, Q in compound (I) is in the para position. In another embodiment, Z in compound (I) is in the para position. In another embodiment, Y in compound (I) is in the meta position. In another embodiment, Q in compound (I) is in the para position, Y is in the meta position and Z is in the para position.
In another embodiment, the present invention provides a selective androgen receptor modulator (SARM) compound having in-vivo androgenic and anabolic activity of a nonsteroidal ligand for the androgen receptor, said compound represented by the structure of formula II:
Figure US07026500-20060411-C00003
wherein X, Y, Z and Q are as defined above for compound I.
In another embodiment, the present invention provides an analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide of the compound of formula II, or any combination thereof.
In one embodiment, X in compound (II) is O. In another embodiment, Z in compound (II) is NO2. In another embodiment, Z in compound (II) is CN. In another embodiment, Z in compound (II) is H. In another embodiment, Z in compound (II) is Cl. In another embodiment, Z in compound (II) is Br. In another embodiment, Z in compound (II) is F. In another embodiment, Z in compound (II) is I. In another embodiment, Y in compound (II) is CF3. In another embodiment, Y in compound (II) is Cl. In another embodiment, Y in compound (II) is Br. In another embodiment, Y in compound (II) is F. In another embodiment, Y in compound (II) is I. In another embodiment, Q in compound (II) is NHCOCH3. In another embodiment, Q in compound (II) is F.
In one embodiment, the compound of formula II is represented by the structure:
Figure US07026500-20060411-C00004
In another embodiment, the compound of formula II is represented by the structure:
Figure US07026500-20060411-C00005
In one embodiment, the compound of formula II is represented by the structure:
Figure US07026500-20060411-C00006
In one embodiment, the compound of formula II is represented by the structure:
Figure US07026500-20060411-C00007
In one embodiment, the compound of formula II is represented by the structure:
Figure US07026500-20060411-C00008
In one embodiment, the compound of formula II is represented by the structure:
Figure US07026500-20060411-C00009
In one embodiment, the compound of formula HI is represented by the structure:
Figure US07026500-20060411-C00010
In one embodiment, the compound of formula II is represented by the structure:
Figure US07026500-20060411-C00011
In one embodiment, the compound of formula II is represented by the structure:
Figure US07026500-20060411-C00012
In one embodiment, the compound of formula II is represented by the structure:
Figure US07026500-20060411-C00013
In one embodiment, the present invention provides a composition comprising the selective androgen receptor modulator compound of formula I or II and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof.
In another embodiment, the present invention provides a pharmaceutical composition comprising the selective androgen receptor modulator compound of formula I or II and/or its analog, derivative, isomer, metabolite, pharmaceutical product, hydrate or N-oxide or any combination thereof; and a suitable carrier or diluent.
In another embodiment, the present invention provides a method of binding a selective androgen receptor modulator compound to an androgen receptor, comprising the step of contacting the androgen receptor with the selective androgen receptor modulator compound of formula I or II and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to bind the selective androgen receptor modulator compound to the androgen receptor.
In another embodiment, the present invention provides a method of suppressing spermatogenesis in a subject comprising contacting an androgen receptor of the subject with the selective androgen receptor modulator compound of formula I or II and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to suppress sperm production.
In another embodiment, the present invention provides a method of contraception in a male subject, comprising the step of administering to the subject the selective androgen receptor modulator compound of formula I or II and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to suppress sperm production in the subject, thereby effecting contraception in the subject.
In another embodiment, the present invention provides a method of hormone therapy comprising the step of contacting an androgen receptor of a subject with the selective androgen receptor modulator compound of any of formula I or II and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to effect a change in an androgen-dependent condition.
In another embodiment, the present invention provides a method of hormone replacement therapy comprising the step of contacting an androgen receptor of a subject with the selective androgen receptor modulator compound of formula I or II and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to effect a change in an androgen-dependent condition.
In another embodiment, the present invention provides a method of treating a subject having a hormone related condition, comprising the step of administering to the subject the selective androgen receptor modulator compound of formula I or II and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to effect a change in an androgen-dependent condition.
In another embodiment, the present invention provides a method of treating a subject suffering from prostate cancer, comprising the step of administering to said subject the selective androgen receptor modulator compound of formula I or II and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to treat prostate cancer in the subject.
In another embodiment, the present invention provides a method of preventing prostate cancer in a subject, comprising the step of administering to the subject the selective androgen receptor modulator compound of formula I or II and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to prevent prostate cancer in the subject.
In another embodiment, the present invention provides a method of delaying the progression of prostate cancer in a subject suffering from prostate cancer, comprising the step of administering to said subject the selective androgen receptor modulator compound of formula I or II and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to delay the progression of prostate cancer in the subject.
In another embodiment, the present invention provides a method of preventing the recurrence of prostate cancer in a subject suffering from prostate cancer, comprising the step of administering to said subject the selective androgen receptor modulator compound of formula I or II and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to prevent the recurrence of prostate cancer in the subject.
In another embodiment, the present invention provides a method of treating the recurrence of prostate cancer in a subject suffering from prostate cancer, comprising the step of administering to said subject the selective androgen receptor modulator compound of formula I or II and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to treat the recurrence of prostate cancer in the subject.
In another embodiment, the present invention provides a method of treating a dry eye condition in a subject suffering from dry eyes, comprising the step of administering to said subject the selective androgen receptor modulator compound of formula I or II and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to treat dry eyes in the subject.
In another embodiment, the present invention provides a method of preventing a dry eye condition in a subject, comprising the step of administering to said subject the selective androgen receptor modulator compound of formula I or II and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to prevent dry eyes in the subject.
The novel selective androgen receptor modulator compounds of the present invention, either alone or as a pharmaceutical composition, are useful for a) male contraception; b) treatment of a variety of hormone-related conditions, for example conditions associated with ADAM, such as fatigue, depression, decreased libido, sexual dysfunction, erectile dysfunction, hypogonadism, osteoporosis, hair loss, obesity, sarcopenia, osteopenia, benign prostate hyperplasia, and alterations in mood and cognition, c) treatment of conditions associated with ADIF, such as sexual dysfunction, decreased sexual libido, hypogonadism, sarcopenia, osteopenia, osteoporosis, alterations in cognition and mood, depression, anemia, hair loss, obesity, endometriosis, breast cancer, uterine cancer and ovarian cancer; d) treatment and/or prevention of acute and/or chronic muscular wasting conditions; e) preventing and/or treating dry eye conditions; f) oral androgen replacement therapy; and/or g) decreasing the incidence of, halting or causing a regression of prostate cancer.
The selective androgen receptor modulator compounds of the present invention offer a significant advance over steroidal androgen treatment because the selective androgen receptor modulator compounds of the present invention have been shown in-vivo to have an androgenic and anabolic activity of a nonsteroidal ligand for the androgen receptor. Thus, the selective androgen receptor modulator compounds have an androgenic and anabolic activity of a nonsteroidal ligand for the androgen receptor and will not be accompanied by serious side effects, inconvenient modes of administration, or high costs and still have the advantages of oral bioavailability, lack of cross-reactivity with other steroid receptors, and long biological half-lives.
BRIEF DESCRIPTION OF THE FIGURES
The present invention will be understood and appreciated more fully from the following detailed description taken in conjunction with the appended figures which depict:
FIG. 1: Androgenic and Anabolic activity of Compounds 1-4. Rats were left untreated (intact control), castrated (0 mg/day control), or treated with 0.1, 0.3, 0.5, 0.75 and 1.0 mg/day of compound 1 (FIG. 1A), compound 2 (FIG. 1B), compound 3 (FIG. 1C) or compound 4 (FIG. 1D), and the weight of androgen-responsive tissues (prostate, semimal vesicles and levator ani muscle) was determined.
FIG. 2: Androgenic and Anabolic activity of Compound 5. Rats were left untreated (intact control), castrated (0 mg/day control), or treated with 0.1, 0.25, 0.5, 0.75 and 1.0 mg/day of compound 5, and the weight of androgen-responsive tissues (prostate, semimal vesicles and levator ani muscle) was determined.
FIG. 3: Androgenic and Anabolic activity of Compound 6 in rats. Rats were left untreated (intact control), castrated (castrated control), treated with 0.1, 0.3, 0.5, 0.75 and 1.0 mg/day testosterone propionate (TP), or treated with 0.1, 0.3, 0.5, 0.75 and 1.0 mg/day Compound V, and the weight of androgen-responsive tissues (prostate, semimal vesicles and levator ani muscle) was determined.
 DETAILED DESCRIPTION OF THE INVENTION
In one embodiment, this invention provides a class of androgen receptor targeting agents (ARTA). The agents define a new subclass of compounds, which are selective androgen receptor modulators (SARM). Several of the SARM compounds have been found to have an unexpected androgenic and anabolic activity of a nonsteroidal ligand for the androgen receptor. Other SARM compounds have been found to have an unexpected antiandrogenic activity of a nonsteroidal ligand for the androgen receptor. The SARM compounds, either alone or as a composition, are useful for a) male contraception; b) treatment of a variety of hormone-related conditions, for example conditions associated with Androgen Decline in Aging Male (ADAM), such as fatigue, depression, decreased libido, sexual dysfunction, erectile dysfunction, hypogonadism, osteoporosis, hair loss, anemia, obesity, sarcopenia, osteopenia, osteoporosis, benign prostate hyperplasia, alterations in mood and cognition and prostate cancer; c) treatment of conditions associated with Androgen Decline in Female (ADIF), such as sexual dysfunction, decreased sexual libido, hypogonadism, sarcopenia, osteopenia, osteoporosis, alterations in cognition and mood, depression, anemia, hair loss, obesity, endometriosis, breast cancer, uterine cancer and ovarian cancer; d) treatment and/or prevention of acute and/or chronic muscular wasting conditions; e) preventing and/or treating dry eye conditions; f) oral androgen replacement therapy; and/or g) decreasing the incidence of, halting or causing a regression of prostate cancer.
In one embodiment, the present invention provides a selective androgen receptor modulator (SARM) compound represented by the structure of formula I:
Figure US07026500-20060411-C00014
wherein
    • X is O, CH2, NH, Se, PR, NO or NR;
    • T is OH, OR, —NHCOCH3, or NHCOR;
    • Z is H, F, I, Br, Cl, NO2, CN, COOH, COR, NHCOR or CONHR;
    • Y is CF3, F, I, Br, Cl, CN, CR3 or SnR3;
    • or one of Z or Y together with the benzene ring to which it is attached is a fused bicyclic carbocyclic or heterocyclic ring system;
    • Q is alkyl, F, I, Br, Cl, CF3, CN CR3, SnR3, NR2, NHCOCH3, NHCOCF3, NHCOR, NHCONH2, NHCONHR, NHCONR2, NHCOOR, OCONHR, CONHR, NHCSCH3, NHCSCF3, NHCSR, NHCSNH2, NHCSNHR, NHCSNR2, NHSO2CH3, NHSO2R, OR, COR, OCOR, OSO2R, SO2R, SR; or Q together with the benzene ring to which it is attached is a fused ring system represented by structure A, B or C:
      Figure US07026500-20060411-C00015
    • R is alkyl, haloalkyl, dihaloalkyl, trihaloalkyl, CH2F, CBF2, CF3, CF2CF3, aryl, phenyl, halogen, alkenyl or OH; and
    • R1 is CH3, CH2F, CHF2, CF3, CH2CH3, or CF2CF3.
In one embodiment, this invention provides an analog of the compound of formula (I). In another embodiment, this invention provides a derivative of the compound of formula (I). In another embodiment, this invention provides an isomer of the compound of formula (I). In another embodiment, this invention provides a metabolite of the compound of formula (I). In another embodiment, this invention provides a pharmaceutically acceptable salt of the compound of formula (I). In another embodiment, this invention provides a pharmaceutical product of the compound of formula (I). In another embodiment, this invention provides a hydrate of the compound of formula (I). In another embodiment, this invention provides an N-oxide of the compound of formula (I). In another embodiment, this invention provides a combination of any of an analog, derivative, metabolite, isomer, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide of the compound of formula (I).
In one embodiment, X in compound (I) is O. In another embodiment, Z in compound (I) is NO2. In another embodiment, Z in compound (I) is CN. In another embodiment, Z in compound (I) is H. In another embodiment, Z in compound (I) is Cl. In another embodiment, Z in compound (I) is Br. In another embodiment, Z in compound (I) is F. In another embodiment, Z in compound (I) is I. In another embodiment, Y in compound (I) is CF3. In another embodiment, Y in compound (I) is Cl. In another embodiment, Y in compound (I) is Br. In another embodiment, Y in compound (I) is F. In another embodiment, Y in compound (I) is I. In another embodiment, Q in compound (I) is NHCOCH3. In another embodiment, Q in compound (I) is F. In another embodiment, T in compound (I) is OH. In another embodiment, R1 in compound (I) is CH3. In another embodiment, Q in compound (I) is in the para position. In another embodiment, Z in compound (I) is in the para position. In another embodiment, Y in compound (I) is in the meta position. In another embodiment, Q in compound (I) is in the para position, Y is in the meta position and Z is in the para position.
The substituents Z and Y can be in any position of the ring carrying these substituents (hereinafter “A ring”). In one embodiment, the substituent Z is in the para position of the A ring. In another embodiment, the substituent Y is in the meta position of the A ring. In another embodiment, the substituent Z is in the para position of the A ring and substituent Y is in the meta position of the A ring. In another embodiment, the substitutent Z is NO2 and is in the para position of the A ring. In another embodiment, the substitutent Z is CN and is in the para position of the A ring. In another embodiment, the substitutent Z is F and is in the para position of the A ring. In another embodiment, the substitutent Z is Cl and is in the para position of the A ring. In another embodiment, the substitutent Z is Br and is in the para position of the A ring. In another embodiment, the substitutent Z is I and is in the para position of the A ring. In another embodiment, the substitutent Z is H. In another embodiment, the substitutent Y is CF3 and is in the meta position of the A ring. In another embodiment, the substitutent Y is F and is in the meta position of the A ring. In another embodiment, the substitutent Y is Cl and is in the meta position of the A ring. In another embodiment, the substitutent Y is Br and is in the meta position of the A ring. In another embodiment, the substitutent Y is I and is in the meta position of the A ring.
In another embodiment, one of Z or Y together with the benzene ring to which it is attached is a fused bicyclic carbocyclic or heterocyclic ring system, such as, but not being limited to: natphthyl, quinalzolyl, pyrimidinyl, and the like.
The substituent Q can be in any position of the ring carrying these substituents (hereinafter “B ring”). In one embodiment, the substitutent Q is in the para position of the B ring. In another embodiment, Q is F and is in the para position of the B ring. In another embodiment, Q is Cl and is in the para position of the B ring. In another embodiment, Q is Br and is in the para position of the B ring. In another embodiment, Q is I and is in the para position of the B ring. In another embodiment, Q is NHCOCH3 and is in the para position of the B ring.
In another embodiment, the present invention provides a selective androgen receptor modulator (SARM) compound represented by the structure of formula II:
Figure US07026500-20060411-C00016
wherein X, Y, Z and Q are as defined above for compound I.
In one embodiment, this invention provides an analog of the compound of formula II. In another embodiment, this invention provides a derivative of the compound of formula II. In another embodiment, this invention provides an isomer of the compound of formula II. In another embodiment, this invention provides a metabolite of the compound of formula II. In another embodiment, this invention provides a pharmaceutically acceptable salt of the compound of formula II. In another embodiment, this invention provides a pharmaceutical product of the compound of formula II. In another embodiment, this invention provides a hydrate of the compound of formula II. In another embodiment, this invention provides an N-oxide of the compound of formula II. In another embodiment, this invention provides a combination of any of an analog, derivative, metabolite, isomer, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide of the compound of formula II.
In one embodiment, X in compound (II) is O. In another embodiment, Z in compound (E) is NO2. In another embodiment, Z in compound (II) is CN. In another embodiment, Z in compound (II) is H. In another embodiment, Z in compound (II) is Cl. In another embodiment, Z in compound (II) is Br. In another embodiment, Z in compound (II) is F. In another embodiment, Z in compound (II) is I. In another embodiment, Y in compound (II) is CF3. In another embodiment, Y in compound (II) is Cl. In another embodiment, Y in compound (II) is Br. In another embodiment, Y in compound (II) is F. In another embodiment, Y in compound (II) is I. In another embodiment, Q in compound (II) is NHCOCH3. In another embodiment, Q in compound (II) is F.
In one embodiment, the compound of formula II is represented by the structure:
Figure US07026500-20060411-C00017
In another embodiment, the compound of formula II is represented by the structure:
Figure US07026500-20060411-C00018
In one embodiment, the compound of formula II is represented by the structure:
Figure US07026500-20060411-C00019
In one embodiment, the compound of formula II is represented by the structure:
Figure US07026500-20060411-C00020
In one embodiment, the compound of formula II is represented by the structure:
Figure US07026500-20060411-C00021
In one embodiment, the compound of formula II is represented by the structure:
Figure US07026500-20060411-C00022
In one embodiment, the compound of formula II is represented by the structure:
Figure US07026500-20060411-C00023
In one embodiment, the compound of formula II is represented by the structure:
Figure US07026500-20060411-C00024
In one embodiment, the compound of formula II is represented by the structure:
Figure US07026500-20060411-C00025
In one embodiment, the compound of formula II is represented by the structure:
Figure US07026500-20060411-C00026
The substituent R is defined herein as an alkyl, haloalkyl, dihaloalkyl, trihaloalkyl, CH2F, CHF2, CF3, CF2CF3; aryl, phenyl, halogen, alkenyl, or hydroxyl (OH).
An “alkyl” group refers to a saturated aliphatic hydrocarbon, including straight-chain, branched-chain and cyclic alkyl groups. In one embodiment, the alkyl group has 1-12 carbons. In another embodiment, the alkyl group has 1-7 carbons. In another embodiment, the alkyl group has 1-6 carbons. In another embodiment, the alkyl group has 1-4 carbons. The alkyl group may be unsubstituted or substituted by one or more groups selected from halogen, hydroxy, alkoxy carbonyl, amido, alkylamido, dialkylamido, nitro, amino, alkylamino, dialkylamino, carboxyl, thio and thioalkyl.
A “haloalkyl” group refers to an alkyl group as defined above, which is substituted by one or more halogen atoms, e.g. by F, Cl, Br or I.
An “aryl” group refers to an aromatic group having at least one carbocyclic aromatic group or heterocyclic aromatic group, which may be unsubstituted or substituted by one or more groups selected from halogen, haloalkyl, hydroxy, alkoxy carbonyl, amido, alkylamido, dialkylamido, nitro, amino, alkylamino, dialkylamino, carboxy or thio or thioalkyl. Nonlimiting examples of aryl rings are phenyl, naphthyl, pyranyl, pyrrolyl, pyrazinyl, pyrimidinyl, pyrazolyl, pyridinyl, furanyl, thiophenyl, thiazolyl, imidazolyl, isoxazolyl, and the like.
A “hydroxyl” group refers to an OH group. An “alkenyl” group refers to a group having at least one carbon to carbon double bond. A halo group refers to F, Cl, Br or I.
An “arylalkyl” group refers to an alkyl bound to an aryl, wherein alkyl and aryl are as defined above. An example of an aralkyl group is a benzyl group.
As contemplated herein, the present invention relates to the use of a SARM compound and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate, N-oxide, or combinations thereof. In one embodiment, the invention relates to the use of an analog of the SARM compound. In another embodiment, the invention relates to the use of a derivative of the SARM compound. In another embodiment, the invention relates to the use of an isomer of the SARM compound. In another embodiment, the invention relates to the use of a metabolite of the SARM compound. In another embodiment, the invention relates to the use of a pharmaceutically acceptable salt of the SARM compound. In another embodiment, the invention relates to the use of a pharmaceutical product of the SARM compound. In another embodiment, the invention relates to the use of a hydrate of the SARM compound. In another embodiment, the invention relates to the use of an N-oxide of the SARM compound.
As defined herein, the term “isomer” includes, but is not limited to, optical isomers and analogs, structural isomers and analogs, conformational isomers and analogs, and the like.
In one embodiment, this invention encompasses the use of various optical isomers of the SARM compound. It will be appreciated by those skilled in the art that the SARMs of the present invention contain at least one chiral center. Accordingly, the SARMs used in the methods of the present invention may exist in, and be isolated in, optically-active or racemic forms. Some compounds may also exhibit polymorphism. It is to be understood that the present invention encompasses any racemic, optically-active, polymorphic, or stereroisomeric form, or mixtures thereof, which form possesses properties useful in the treatment of androgen-related conditions described herein. In one embodiment, the SARMs are the pure (R)-isomers. In another embodiment, the SARMs are the pure (S)-isomers. In another embodiment, the SARMs are a mixture of the (R) and the (S) isomers. In another embodiment, the SARMs are a racemic mixture comprising an equal amount of the (R) and the (S) isomers. It is well known in the art how to prepare optically-active forms (for example, by resolution of the racemic form by recrystallization techniques, by synthesis from optically-active starting materials, by chiral synthesis, or by chromatographic separation using a chiral stationary phase).
The invention includes pharmaceutically acceptable salts of amino-substituted compounds with organic and inorganic acids, for example, citric acid and hydrochloric acid. The invention also includes N-oxides of the amino substituents of the compounds described herein. Pharmaceutically acceptable salts can also be prepared from the phenolic compounds by treatment with inorganic bases, for example, sodium hydroxide. Also, esters of the phenolic compounds can be made with aliphatic and aromatic carboxylic acids, for example, acetic acid and benzoic acid esters.
This invention further includes derivatives of the SARM compounds. The term “derivatives” includes but is not limited to ether derivatives, acid derivatives, amide derivatives, ester derivatives and the like. In addition, this invention further includes hydrates of the SARM compounds. The term “hydrate” includes but is not limited to hemihydrate, monohydrate, dihydrate, trihydrate and the like.
This invention further includes metabolites of the SARM compounds. The term “metabolite” means any substance produced from another substance by metabolism or a metabolic process.
This invention further includes pharmaceutical products of the SARM compounds. The term “pharmaceutical product” means a composition suitable for pharmaceutical use (pharmaceutical composition), as defined herein.
Biological Activity of Selective Androgen Modulator Compounds
The compounds provided herein are a new subclass of compounds which are selective androgen receptor modulators (SARM) which are useful for oral testosterone replacement therapy which have an unexpected in-vivo activity for an androgenic and anabolic activity of a nonsteroidal ligand for the androgen receptor. Further, appropriately substituted compounds are effective to treat prostate cancer and are useful for imaging of prostate cancer. The SARM compounds demonstrate an in-vivo androgenic and anabolic activity of a nonsteroidal ligand for the androgen receptor.
As contemplated herein, the appropriately substituted SARM compounds of the present invention are useful for a) male contraception; b) treatment of a variety of hormone-related conditions, for example conditions associated with Androgen Decline in Aging Male (ADAM), such as fatigue, depression, decreased libido, sexual dysfunction, erectile dysfunction, hypogonadism, osteoporosis, hair loss, anemia, obesity, sarcopenia, osteopenia,osteoporosis, benign prostate hyperplasia, alterations in mood and cognition and prostate cancer; c) treatment of conditions associated with ADIF, such as sexual dysfunction, decreased sexual libido, hypogonadism, sarcopenia, osteopenia, osteoporosis, alterations in cognition and mood, depression, anemia, hair loss, obesity, endometriosis, breast cancer, uterine cancer and ovarian cancer; d) treatment and/or prevention of acute and/or chronic muscular wasting conditions; e) preventing and/or treating dry eye conditions; f) oral androgen replacement therapy; and/or g) decreasing the incidence of, halting or causing a regression of prostate cancer.
As used herein, receptors for extracellular signaling molecules are collectively referred to as “cell signaling receptors”. Many cell signaling receptors are transmembrane proteins on a cell surface; when they bind an extracellular signaling molecule (i.e., a ligand), they become activated so as to generate a cascade of intracellular signals that alter the behavior of the cell. In contrast, in some cases, the receptors are inside the cell and the signaling ligand has to enter the cell to activate them; these signaling molecules therefore must be sufficiently small and hydrophobic to diffuse across the plasma membrane of the cell.
Steroid hormones are one example of small hydrophobic molecules that diffuse directly across the plasma membrane of target cells and bind to intracellular cell signaling receptors. These receptors are structurally related and constitute the intracellular receptor superfamily (or steroid-hormone receptor superfamily). Steroid hormone receptors include progesterone receptors, estrogen receptors, androgen receptors, glueocorticoid receptors, and mineralocorticoid receptors. The present invention is particularly directed to androgen receptors.
In addition to ligand binding to the receptors, the receptors can be blocked to prevent ligand binding. When a substance binds to a receptor, the three-dimensional structure of the substance fits into a space created by the three-dimensional structure of the receptor in a ball and socket configuration. The better the ball fits into the socket, the more tightly it is held. This phenomenon is called affinity. If the affinity of a substance is greater than the original hormone, it will compete with the hormone and bind the binding site more frequently. Once bound, signals may be sent through the receptor into the cells, causing the cell to respond in some fashion. This is called activation. On activation, the activated receptor then directly regulates the transcription of specific genes. But the substance and the receptor may have certain attributes, other than affinity, in order to activate the cell. Chemical bonds between atoms of the substance and the atoms of the receptors may form. In some cases, this leads to a change in the configuration of the receptor, which is enough to begin the activation process (called signal transduction).
In one embodiment, the present invention is directed to selective androgen receptor modulator compounds which are agonist compounds. A receptor agonist is a substance which binds receptors and activates them. Thus, in one embodiment, the SARM compounds of the present invention are useful in binding to and activating steroidal hormone receptors. In one embodiment, the agonist compound of the present invention is an agonist which binds the androgen receptor. In another embodiment, the compound has high affinity for the androgen receptor. In another embodiment, the agonist compound also has anabolic activity. In another embodiment, the present invention provides selective androgen modulator compounds which have agonistic and anabolic activity of a nonsteroidal compound for the androgen receptor.
In another embodiment, other selective androgen receptor modulator compounds are antagonist compounds. A receptor antagonist is a substance which binds receptors and inactivates them. Thus, in one embodiment, the SARM compounds of the present invention are useful in binding to and inactivating steroidal hormone receptors. In one embodiment, the antagonist compound of the present invention is an antagonist which binds the androgen receptor. In another embodiment, the compound has high affinity for the androgen receptor.
In yet another embodiment, the SARM compounds of the present invention can be classified as partial AR agonist/antagonists. The SARMs are AR agonists in some tissues, to cause increased transcription of AR-responsive genes (e.g. muscle anabolic effect). In other tissues, these compounds serve as inhibitors at the AR to prevent agonistic effects of the native androgens.
Assays to determine whether the compounds of the present invention are AR agonists or antagonists are well known to a person skilled in the art. For example, AR agonistic activity can be determined by monitoring the ability of the SARM compounds to maintain and/or stimulate the growth of AR containing tissue such as prostate and seminal vesicles, as measured by weight. AR antagonistic activity can be determined by monitoring the ability of the SARM compounds to inhibit the growth of AR containing tissue.
The compounds of the present invention bind either reversibly or irreversibly to an androgen receptor. In one embodiment, the androgen receptor is an androgen receptor of a mammal. In another embodiment, the androgen receptor is an androgen receptor of a human. In one embodiment, the SARM compounds bind reversibly to the androgen receptor of a mammal, for example a human. Reversible binding of a compound to a receptor means that a compound can detach from the receptor after binding.
In another embodiment, the SARM compounds bind irreversibly to the androgen receptor of a mammal, for example a human. Thus, in one embodiment, the compounds of the present invention may contain a functional group (e.g. affinity label) that allows alkylation of the androgen receptor (i.e. covalent bond formation). Thus, in this case, the compounds are alkylating agents which bind irreversibly to the receptor and, accordingly, cannot be displaced by a steroid, such as the endogenous ligands DHT and testosterone. An “alkylating agent” is defined herein as an agent which alkylates (forms a covalent bond) with a cellular component, such as DNA, RNA or enzyme. It is a highly reactive chemical that introduces alkyl radicals into biologically active molecules and thereby prevents their proper functioning. The alkylating moiety is an electrophilic group that interacts with nucleophilic moieties in cellular components.
According to one embodiment of the present invention, a method is provided for binding the SARM compounds of the present invention to an androgen receptor by contacting the receptor with a SARM compound and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, under conditions effective to cause the selective androgen receptor modulator compound to bind the androgen receptor. The binding of the selective androgen receptor modulator compounds to the androgen receptor enables the compounds of the present invention to be useful as a male contraceptive and in a number of hormone therapies. The agonist compounds bind to and activate the androgen receptor. The antagonist compounds bind to and inactivate the androgen receptor. Binding of the agonist or antagonist compounds is either reversible or irreversible.
According to one embodiment of the present invention, a method is provided for suppressing spermatogenesis in a subject by contacting an androgen receptor of the subject with a SARM compound of the present invention and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to bind the selective androgen receptor modulator compound to the androgen receptor and suppress spermatogenesis.
According to another embodiment of the present invention, a method is provided for contraception in a male subject, comprising the step of administering to the subject a SARM compound of the present invention and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to suppress sperm production in the subject, thereby effecting contraception in the subject.
According to another embodiment of the present invention, a method is provided for hormonal therapy in a patient (i.e., one suffering from an androgen-dependent condition) which includes contacting an androgen receptor of a patient with a SARM compound of the present invention and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to bind the selective androgen receptor modulator compound to the androgen receptor and effect a change in an androgen-dependent condition.
According to another embodiment of the present invention, a method is provided for hormone replacement therapy in a patient (i.e., one suffering from an androgen-dependent condition) which includes contacting an androgen receptor of a patient with a SARM compound of the present invention and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to bind the selective androgen receptor modulator compound to the androgen receptor and effect a change in an androgen-dependent condition.
According to another embodiment of the present invention, a method is provided for treating a subject having a hormone related condition, which includes administering to the subject a SARM compound of the present invention and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to bind the SARM compound to the androgen receptor and effect a change in an androgen-dependent condition.
Androgen-dependent conditions which may be treated according to the present invention include those conditions which are associated with aging, such as hypogonadism, sarcopenia, erythropoiesis, osteoporosis, and any other conditions later determined to be dependent upon low androgen (e.g., testosterone) levels.
According to another embodiment of the present invention, a method is provided for treating a subject suffering from prostate cancer, comprising the step of administering to the subject a SARM compound of the- present invention and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to treat prostate cancer in the subject.
According to another embodiment of the present invention, a method is provided for preventing prostate cancer in a subject, comprising the step of administering to the subject a SARM compound of the present invention and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to treat prevent prostate cancer in the subject.
According to another embodiment of the present invention, a method is provided for delaying the progression of prostate cancer in a subject suffering from prostate cancer, comprising the step of administering to the subject a SARM compound of the present invention and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to delay the progression of prostate cancer in the subject.
According to another embodiment of the present invention, a method is provided for preventing the recurrence of prostate cancer in a subject suffering from prostate cancer, comprising the step of administering to the subject a SARM compound of the present invention and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to prevent the recurrence of prostate cancer in the subject.
According to another embodiment of the present invention, a method is provided for treating the recurrence of prostate cancer in a subject suffering from prostate cancer, comprising the step of administering to the subject a SARM compound of the present invention and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to treat the recurrence of prostate cancer in the subject.
Furthermore, stimulation of the Androgen Receptor stimulates the production of tears, and thus the SARM compounds of the present invention may be used to treat dry eye conditions. Therefore, according to another embodiment of the present invention, a method is provided for treating a dry eye condition in a subject suffering from dry eyes, comprising the step of administering to said subject the selective androgen receptor modulator compound of formulas I-IV and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to treat dry eyes in the subject.
According to another embodiment of the present invention, a method is provided for preventing a dry eye condition in a subject, comprising the step of administering to said subject the selective androgen receptor modulator compound of formulas I-IV and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof, in an amount effective to prevent dry eyes in the subject.
As defined herein, “contacting” means that the SARM compound of the present invention is introduced into a sample containing the enzyme in a test tube, flask, tissue culture, chip, array, plate, microplate, capillary, or the like, and incubated at a temperature and time sufficient to permit binding of the SARM to the enzyme. Methods for contacting the samples with the SARM or other specific binding components are known to those skilled in the art and may be selected depending on the type of assay protocol to be run. Incubation methods are also standard and are known to those skilled in the art.
In another embodiment, the term “contacting” means that the SARM compound of the present invention is introduced into a subject receiving treatment, and the SARM compound is allowed to come in contact with the androgen receptor in vivo.
As used herein, the term “treating” includes preventative as well as disorder remitative treatment. As used herein, the terms “reducing”, “suppressing” and “inhibiting” have their commonly understood meaning of lessening or decreasing. As used herein, the term “progression” means increasing in scope or severity, advancing, growing or becoming worse. As used herein, the term “recurrence” means the return of a disease after a remission.
As used herein, the term “administering” refers to bringing a subject in contact with a SARM compound of the present invention. As used herein, administration can be accomplished in vitro, i.e. in a test tube, or in vivo, i.e. in cells or tissues of living organisms, for example humans. In one embodiment, the present invention encompasses administering the compounds of the present invention to a subject.
The term “libido, as used herein, means sexual desire.
The term “erectile”, as used herein, means capable of being erected. An erectile tissue is a tissue, which is capable of being greatly dilated and made rigid by the distension of the numerous blood vessels which it contains.
“Hypogonadism” is a condition resulting from or characterised by abnormally decreased functional activity of the gonads, with retardation of growth and sexual development. “Osteopenia” refers to decreased calcification or density of bone. This is a term which encompasses all skeletal systems in which such a condition is noted.
“Osteoporosis” refers to a thinning of the bones with reduction in bone mass due to depletion of calcium and bone protein. Osteoporosis predisposes a person to fractures, which are often slow to heal and heal poorly. Unchecked osteoporosis can lead to changes in posture, physical abnormality, and decreased mobility.
“BPH (benign prostate hyperplasia)” is a nonmalignant enlargement of the prostate gland, and is the most common non-malignant proliferative abnormality found in any internal organ and the major cause of morbidity in the adult male. BPH occurs in over 75% of men over 50 years of age, reaching 88% prevalence by the ninth decade. BPH frequently results in a gradual squeezing of the portion of the urethra which traverses the prostate (prostatic urethra). This causes patients to experience a frequent urge to urinate because of incomplete emptying of the bladder and urgency of urination. The obstruction of urinary flow can also lead to a general lack of control over urination, including difficulty initiating urination when desired, as well as difficulty in preventing urinary flow because of the inability to empty urine from the bladder, a condition known as overflow urinary incontinence, which can lead to urinary obstruction and to urinary failure.
“Cognition” refers to the process of knowing, specifically the process of being aware, knowing, thinking, learning and judging. Cognition is related to the fields of psychology, linguistics, computer science, neuroscience, mathematics, ethology and philosophy. The term “mood” refers to a temper or state of the mind. As contemplated herein, alterations means any change for the positive or negative, in cognition and/or mood.
The term “depression” refers to an illness that involves the body, mood and thoughts, that affects the way a person eats, sleeps and the way one feels about oneself, and thinks about things. The signs and symptoms of depression include loss of interest in activities, loss of appetite or overeating, loss of emotional expression, an empty mood, feelings of hopelessness, pessimism, guilt or helplessness, social withdrawal, fatigue, sleep disturbances, trouble concentrating, remembering, or making decisions, restlessness, irritability, headaches, digestive disorders or chronic pain.
The term “hair loss”, medically known as alopecia, refers to baldness as in the very common type of male-pattern baldness. Baldness typically begins with patch hair loss on the scalp and sometimes progresses to complete baldness and- even loss of body hair. Hair loss affects both males and females.
“Anemia” refers to the condition of having less than the normal number of red blood cells or less than the normal quantity of hemoglobin in the blood. The oxygen-carrying capacity of the blood is, therefore, decreased. Persons with anemia may feel tired and fatigue easily, appear pale, develop palpitations and become usually short of breath. Anemia is caused by four basic factors: a) hemorrhage (bleeding); b) hemolysis (excessive destruction of red blood cells); c) underproduction of red blood cells; and d) not enough normal hemoglobin. There are many forms of anemia, including aplastic anemia, benzene poisoning, Fanconi anemia, hemolytic disease of the newborn, hereditary spherocytosis, iron deficiency anemia, osteopetrosis, pernicious anemia, sickle cell disease, thalassemia, myelodysplastic syndrome, and a variety of bone marrow diseases. As contemplated herein, the SARM compounds of the present invention are useful in preventing and/or treating any one or more of the above-listed forms of anemia.
“Obesity” refers to the state of being well above one's normal weight. Traditionally, a person is considered to be obese if they are more than 20 percent over their ideal weight. Obesity has been more precisely defined by the National Institute of Health (NIH) as a Body to Mass Index (BMI) of 30 or above. Obesity is often multifactorial, based on both genetic and behavioral factors. Overweight due to obesity is a significant contributor to health problems. It increases the risk of developing a number of diseases including: Type 2 (adult-onset) diabetes; high blood pressure (hypertension); stroke (cerebrovascular accident or CVA); heart attack (myocardial infarction or MI); heart failure (congestive heart failure); cancer (certain forms such as cancer of the prostate and cancer of the colon and rectum); gallstones and gallbladder disease (cholecystitis); Gout and gouty arthritis; osteoarthritis (degenerative arthritis) of the knees, hips, and the lower back; sleep apnea (failure to breath normally during sleep, lowering blood oxygen); and Pickwickian syndrome (obesity, red face, underventilation and drowsiness). As contemplated herein, the term “obesity” includes any one of the above-listed obesity-related conditions and diseases. Thus the SARM compounds of the present invention are useful in preventing and/or treating obesity and any one or more of the above-listed obesity-related conditions and diseases.
“Prostate cancer” is one of the most frequently occurring cancers among men in the United States, with hundreds of thousands of new cases diagnosed each year. Over sixty percent of newly diagnosed cases of prostate cancer are found to be pathologically advanced, with no cure and a dismal prognosis. One third of all men over 50 years of age have a latent form of prostate cancer that may be activated into the life-threatening clinical prostate cancer form. The frequency of latent prostatic tumors has been shown to increase substantially with each decade of life from the 50s (5.3-14%) to the 90s (40-80%). The number of people with latent prostate cancer is the same across all cultures, ethnic groups, and races, yet the frequency of clinically aggressive cancer is markedly different. This suggests that environmental factors may play a role in activating latent prostate cancer.
In one embodiment, the methods of the present invention comprise administering a SARM compound as the sole active ingredient. However, also encompassed within the scope of the present invention are methods for hormone therapy, for treating prostate cancer, for delaying the progression of prostate cancer, and for preventing and/or treating the recurrence of prostate cancer, which comprise administering the SARM compounds in combination with one or more therapeutic agents. These agents include, but are not limited to: LHRH analogs, reversible antiandrogens, antiestrogens, anticancer drugs, 5-alpha reductase inhibitors, aromatase inhibitors, progestins, agents acting through other nuclear hormone receptors, selective estrogen receptor modulators (SERM), progesterone, estrogen, PDE5 inhibitors, apomorphine, bisphosphonate, and one or more additional SARMS.
Thus, in one embodiment, the methods of the present invention comprise administering the selective androgen receptor modulator compound, in combination with an LHRF analog. In another embodiment, the methods of the present invention comprise administering a selective androgen receptor modulator compound, in combination with a reversible antiandrogen. In another embodiment, the methods of the present invention comprise administering a selective androgen receptor modulator compound, in combination with an antiestrogen. In another embodiment, the methods of the present invention comprise administering a selective androgen receptor modulator compound, in combination with an anticancer drug. In another embodiment, the methods of the present invention comprise administering a selective androgen receptor modulator compound, in combination with a 5-alpha reductase inhibitor. In another embodiment, the methods of the present invention comprise administering a selective androgen receptor modulator compound, in combination with an aromatase inhibitor. In another embodiment, the methods of the present invention comprise administering a selective androgen receptor modulator compound, in combination with a progestin. In another embodiment, the methods of the present invention comprise administering a selective androgen receptor modulator compound, in combination with an agent acting through other nuclear hormone receptors. In another embodiment, the methods of the present invention comprise administering a selective androgen receptor modulator compound, in combination with a selective estrogen receptor modulators (SERM). In another embodiment, the methods of the present invention comprise administering a selective androgen receptor modulator compound, in combination with a progesterone. In another embodiment, the methods of the present invention comprise administering a selective androgen receptor modulator compound, in combination with an estrogen. In another embodiment, the methods of the present invention comprise administering a selective androgen receptor modulator compound, in combination with a PDE5 inhibitor. In another embodiment, the methods of the present invention comprise administering a selective androgen receptor modulator compound, in combination with apomorphine. In another embodiment, the methods of the present invention comprise administering a selective androgen receptor modulator compound, in combination with a bisphosphonate. In another embodiment, the methods of the present invention comprise administering a selective androgen receptor modulator compound, in combination with one or more additional SARMS.
In one embodiment, the present invention provides a composition and a pharmaceutical composition comprising the selective androgen receptor modulator compound of any of formulas I-VI and/or its analog, derivative, isomer, metabolite, pharmaceutically acceptable salt, pharmaceutical product, hydrate or N-oxide or any combination thereof; and a suitable carrier or diluent.
As used herein, “pharmaceutical composition” means therapeutically effective amounts of the SARM together with suitable diluents, preservatives, solubilizers, emulsifiers, adjuvant and/or carriers. A “therapeutically effective amount” as used herein refers to that amount which provides a therapeutic effect for a given condition and administration regimen. Such compositions are liquids or Lyophilized or otherwise dried formulations and include diluents of various buffer content (e.g., Tris-HCI., acetate, phosphate), pH and ionic strength, additives such as albumin or gelatin to prevent absorption to surfaces, detergents (e.g., Tween 20, Tween 80, Pluronic F68, bile acid salts), solubilizing agents (e.g., glycerol, polyethylene glycerol), anti-oxidants (e.g., ascorbic acid, sodium metabisulfite), preservatives (e.g., Thimerosal, benzyl alcohol, parabens), bulking substances or tonicity modifiers (e.g., lactose, mannitol), covalent attachment of polymers such as polyethylene glycol to the protein, complexation with metal ions, or incorporation of the material into or onto particulate preparations of polymeric compounds such as polylactic acid, polglycolic acid, hydrogels, etc, or onto liposomes, microemulsions, micelles, unilamellar or multilamellar vesicles, erythrocyte ghosts, or spheroplasts.) Such compositions will influence the physical state, solubility, stability, rate of in vivo release, and rate of in vivo clearance. Controlled or sustained release compositions include formulation in lipophilic depots (e.g., fatty acids, waxes, oils).
Also comprehended by the invention are particulate compositions coated with polymers (e.g., poloxamers or poloxamines). Other embodiments of the compositions of the invention incorporate particulate forms protective coatings, protease inhibitors or permeation enhancers for various routes of administration, including parenteral, pulmonary, nasal and oral. In one embodiment the pharmaceutical composition is administered parenterally, paracancerally, transmucosally, transdermally, intramuscularly, intravenously, intradermally, subcutaneously, intravaginally, intraperitonealy, intraventricularly, intracranially or intratumorally.
Further, as used herein “pharmaceutically acceptable carriers” are well known to those skilled in the art and include, but are not limited to, 0.01-0.1M and preferably 0.05M phosphate buffer or 0.8% saline. Additionally, such pharmaceutically acceptable carriers may be aqueous or non-aqueous solutions, suspensions, and emulsions. Examples of non-aqueous solvents are propylene glycol, polyethylene glycol, vegetable oils such as olive oil, and injectable organic esters such as ethyl oleate. Aqueous carriers include water, alcoholic/aqueous solutions, emulsions or suspensions, including saline and buffered media.
Parenteral vehicles include sodium chloride solution, Ringer's dextrose, dextrose and sodium chloride, lactated Ringer's and fixed oils. Intravenous vehicles include fluid and nutrient replenishers, electrolyte replenishers such as those based on Ringer's dextrose, and the like. Preservatives and other additives may also be present, such as, for example, antimicrobials, antioxidants, collating agents, inert gases and the like.
Controlled or sustained release compositions include formulation in lipophilic depots (e.g. fatty acids, waxes, oils). Also comprehended by the invention are particulate compositions coated with polymers (e.g. poloxamers or poloxamines) and the compound coupled to antibodies directed against tissue-specific receptors, ligands or antigens or coupled to ligands of tissue-specific receptors.
Other embodiments of the compositions of the invention incorporate particulate forms, protective coatings, protease inhibitors or permeation enhancers for various routes of administration, including parenteral, pulmonary, nasal and oral.
Compounds modified by the covalent attachment of water-soluble polymers such as polyethylene glycol, copolymers of polyethylene glycol and polypropylene glycol, carboxymethyl cellulose, dextran, polyvinyl alcohol, polyvinylpyrrolidone or polyproline are known to exhibit substantially longer half-lives in blood following intravenous injection than do the corresponding unmodified compounds (Abuchowski et al., 1981; Newmark et al., 1982; and Katre et al., 1987). Such modifications may also increase the compound's solubility in aqueous solution, eliminate aggregation, enhance the physical and chemical stability of the compound, and greatly reduce the immunogenicity and reactivity of the compound. As a result, the desired in vivo biological activity may be achieved by the administration of such polymer-compound abducts less frequently or in lower doses than with the unmodified compound.
In yet another embodiment, the pharmaceutical composition can be delivered in a controlled release system. For example, the agent may be administered using intravenous infusion, an implantable osmotic pump, a transdermal patch, liposomes, or other modes of administration. In one embodiment, a pump may be used (see Langer, supra; Sefton, CRC Crit. Ref. Biomed. Eng. 14:201 (1987); Buchwald et al., Surgery 88:507 (1980); Saudek et al., N. Engl. J. Med. 321:574 (1989). In another embodiment, polymeric materials can be used. In yet another embodiment, a controlled release system can be placed in proximity to the therapeutic target, i.e., the brain, thus requiring only a fraction of the systemic dose (see, e.g., Goodson, in Medical Applications of Controlled Release, supra, vol. 2, pp. 115-138 (1984). Other controlled release systems are discussed in the review by Langer (Science 249:1527-1533 (1990).
The pharmaceutical preparation can comprise the SARM agent alone, or can further include a pharmaceutically acceptable carrier and can be in solid or liquid form such as tablets, powders, capsules, pellets, solutions, suspensions, elixs, emulsions, gels, creams, or suppositories, including rectal and urethral suppositories. Pharmaceutically acceptable carriers include gums, starches, sugars, cellulosic materials, and mixtures thereof. The pharmaceutical preparation containing the SARM agent can be administered to a subject by, for example, subcutaneous implantation of a pellet; in one embodiment, the pellet provides for controlled release of SARM agent over a period of time. The preparation can also be administered by intravenous, intraarterial, or intramuscular injection of a liquid preparation, oral administration of a liquid or solid preparation, or by topical application. Administration can also be accomplished by use of a rectal suppository or a urethral suppository.
The pharmaceutical preparations of the invention can be prepared by known dissolving, mixing, granulating, or tablet-forming processes. For oral administration, the SARM agents or their physiologically tolerated derivatives such as salts, esters, N-oxides, and the like are mixed with additives customary for this purpose, such as vehicles, stabilizers, or inert diluents, and converted by customary methods into suitable forms for administration, such as tablets, coated tablets, hard or soft gelatin capsules, aqueous, alcoholic or oily solutions. Examples of suitable inert vehicles are conventional tablet bases such as lactose, sucrose, or cornstarch in combination with binders such as acacia, cornstarch, gelatin, with disintegrating agents such as cornstarch, potato starch, alginic acid, or with a lubricant such as stearic acid or magnesium stearate.
Examples of suitable oily vehicles or solvents are vegetable or animal oils such as sunflower oil or fish-liver oil. Preparations can be effected both as dry and as wet granules. For parenteral administration (subcutaneous, intravenous, intraarterial, or intramuscular injection), the SARM agents or their physiologically tolerated derivatives such as salts, esters, N-oxides, and the like are converted into a solution, suspension, or emulsion, if desired with the substances customary and suitable for this purpose, for example, solubilizers or other auxiliaries. Examples are sterile liquids such as water and oils, with or without the addition of a surfactant and other pharmaceutically acceptable adjuvants. Illustrative oils are those of petroleum, animal, vegetable, or synthetic origin, for example, peanut oil, soybean oil, or mineral oil. In general, water, saline, aqueous dextrose and related sugar solutions, and glycols such as propylene glycols or polyethylene glycol are preferred liquid carriers, particularly for injectable solutions.
The preparation of pharmaceutical compositions which contain an active component is well understood in the art. Typically, such compositions are prepared as aerosols of the polypeptide delivered to the nasopharynx or as injectables, either as liquid solutions or suspensions; however, solid forms suitable for solution in, or suspension in, liquid prior to injection can also be prepared. The preparation can also be emulsified. The active therapeutic ingredient is often mixed with excipients which are pharmaceutically acceptable and compatible with the active ingredient. Suitable excipients are, for example, water, saline, dextrose, glycerol, ethanol, or the like or any combination thereof.
In addition, the composition can contain minor amounts of auxiliary substances such as wetting or emulsifying agents, pH buffering agents which enhance the effectiveness of the active ingredient.
An active component can be formulated into the composition as neutralized pharmaceutically acceptable salt forms. Pharmaceutically acceptable salts include the acid addition salts (formed with the free amino groups of the polypeptide or antibody molecule), which are formed with inorganic acids such as, for example, hydrochloric or phosphoric acids, or such organic acids as acetic, oxalic, tartaric, mandelic, and the like. Salts formed from the free carboxyl groups can also be derived from inorganic bases such as, for example, sodium, potassium, ammonium, calcium, or ferric hydroxides, and such organic bases as isopropylamine, trimethylamine, 2-ethylamino ethanol, histidine, procaine, and the like.
For topical administration to body surfaces using, for example, creams, gels, drops, and the like, the SARM agents or their physiologically tolerated derivatives such as salts, esters, N-oxides, and the like can be prepared and applied as solutions, suspensions, or emulsions in a physiologically acceptable diluent with or without a pharmaceutical carrier.
In another embodiment, the active compound can be delivered in a vesicle, in particular a liposome (see Langer, Science 249:1527-1533 (1990); Treat et al., in Liposomes in the Therapy of Infectious Disease and Cancer, Lopez-Berestein and Fidler (eds.), Liss, New York, pp. 353-365 (1989); Lopez-Berestein, ibid., pp. 317-327; see generally ibid).
For use in medicine, the salts of the SARM may be pharmaceutically acceptable salts. Other salts may, however, be useful in the preparation of the compounds according to the invention or of their pharmaceutically acceptable salts. Suitable pharmaceutically acceptable salts of the compounds of this invention include acid addition salts which may, for example, be formed by mixing a solution of the compound according to the invention with a solution of a pharmaceutically acceptable acid such as hydrochloric acid, sulphuric acid, methanesulphonic acid, fumaric acid, maleic acid, succinic acid, acetic acid, benzoic: acid, oxalic acid, citric acid, tartaric acid, carbonic acid or phosphoric acid.
The following examples are presented in order to more fully illustrate the preferred embodiments of the invention. They should in no way be construed, however, as limiting the broad scope of the invention.
EXPERIMENTAL DETAILS SECTION EXAMPLE 1
Androgenic and Anabolic Activity of Compounds 1-4
Binding affinities of select B-ring halogenated SARMS were determined and are represented in Table 1:
TABLE 1
Name Structure MW RBA (%) Ki
1
Figure US07026500-20060411-C00027
 		402.3 26.4  2.3 ± 0.0.06
2
Figure US07026500-20060411-C00028
 		419 7.6  8.6 ± 1.2
3
Figure US07026500-20060411-C00029
 		462 5.3 12.6 ± 1.8
4
Figure US07026500-20060411-C00030
 		510 2.7   23 ± 1.6

Experimental Methods
Animals. Immature male Sprague-Dawley rats, weighing 90 to 100 g, were purchased from Harlan Biosciences (Indianapolis, Ind.). The animals were maintained on a 12-hour light-dark cycle with food and water available ad libitum. The animal protocol was reviewed and approved by the Institutional Laboratory Animal Care and Use Committee.
Study Design. Rats were randomly distributed into treatment groups groups. One day prior to the start of drug treatment, animals were individually removed from the cage, weighed and anesthetized with an intraperitoneal dose of ketamine/xylazine (87/13 mg/kg; approximately 1 mL per kg). When appropriately anesthetized (i.e., no response to toe pinch), the animals' ears were marked for identification purposes. Animals were then placed on a sterile pad and their abdomen and scrotum washed with betadine and 70% alcohol. The testes were removed via a midline scrotal incision, with sterile suture being used to ligate supra-testicular tissue prior to surgical removal of each testis. The surgical wound site was closed with sterile stainless steel wound clips, and the site cleaned with betadine. The animals were allowed to recover on a sterile pad (until able to stand) and then returned to their cage.
Twenty -four hours later, animals were re-anesthetized with ketamine/xylazine, and an Alzet osmotic pump(s) (model 2002) was placed subcutaneouly in the scapular region. In this instance, the scapular region was shaved and cleaned (betadine and alcohol) and a small incision (1 cm) made using a sterile scalpel. The osmotic pump was inserted and the wound closed with a sterile stainless steel wound clip. Animals were allowed to recover and were returned to their cage. Osmotic pumps contained the appropriate treatment dissolved in polyethylene glycol 300 (PEG300). Osmotic pumps were filled with the appropriate solution one day prior to implantation. Animals were monitored daily for signs of acute toxicity to drug treatment (e.g., lethargy, rough coat).
After 14 days of drug treatment, rats were anesthetized with ketamine/xylazine. Animals were then sacrificed by exsanguinations under anesthesia. A blood sample was collected by venipuncture of the abdominal aorta, and submitted for complete blood cell analysis. A portion of the blood was placed in a separate tube, centrifuged at 12,000 g for 1 minute, and the plasma layer removed and frozen at −20° C. The ventral prostates, seminal vesicles, levator ani muscle, liver, kidneys, spleen, lungs, and heart were removed, cleared of extraneous tissue, weighed, and placed in vials containing 10% neutral buffered formalin. Preserved tissues were sent to GTx, Inc. for histopathological analysis.
For data analysis, the weights of all organs were normalized to body weight, and analyzed for any statistical significant difference by single-factor ANOVA. The weights of prostate and seminal vesicle were used as indexes for evaluation of androgenic activity, and the levator ani muscle weight was used to evaluate the anabolic activity.
Results
The androgenic and anabolic activities of compounds 1-4 were examined in a castrated rat model after 14 days of administration. The results are shown in FIGS. 1A-D as a percent of the Intact Control (not castrated, untreated). 0 mg/day denotes Castrated Controls (castrated, untreated).
As shown in FIG. 1, the weights of prostate, seminal vesicle, and levator ani muscle in castrated rats decreased significantly, due to the ablation of endogenous androgen production. Treatment with increasing dosages of compounds 1-4 (FIGS. 1A-D respectively) resulted in a tissue-selective increase in levator ani muscle weights, with little or no stimulation of prostate and seminal vesicle growth (i.e. the prostate and seminal vesicle weights were less than 40% of that observed in intact animals for compound 2, and less than 20% for compounds 1, 3 and 4). Thus these compounds showed little potency and intrinsic activity in increasing the weights of prostate and seminal vesicle, but a great potency and intrinsic activity in increasing the weight of levator ani muscle. Particularly, compound 2 was able to maintain the levator ani muscle weight of castrated animals in the same level as that of intact animals. Thus, compounds 1-4 are potent nonsteroidal anabolic agents. This is a significant improvement over previous compounds, in that these compound selectively stimulate muscle growth and other anabolic effects while having less effect on the prostate and seminal vesicles. This may be particularly relevant in aging men with concerns related to the development or progression of prostate cancer.
EXAMPLE 2
Androgenic and Anabolic Activity of Compound 5
The binding affinity of select compound 5 is represented in Table 2:
TABLE 2
Name Structure MW Ki
5
Figure US07026500-20060411-C00031
 		382.3 3.3 ± 0.08
The androgenic and anabolic activities of compound 5 was examined in a castrated rat model after 14 days of administration, using the method outlined in Example 1 above.
As shown in Table 3 and in FIG. 2, compound 5 demonstrated tissue-selective pharmacological effects in castrated male rats, with higher efficacy in anabolic tissues (i.e. levator ani) as compared to androgenic tissues (i.e. prostate and seminal vesicles). Compound 5 demonstrated little pharmacologic activity in the prostate (8.7±1.39% of intact at 1.0 mg/day dose) and seminal vesicles (10.7±0.91% of intact at 1.0 mg/day dose), suggesting that it acts as a weak partial agonist in these tissues. Importantly, compound 5 demonstrates highly efficacious anabolic activity at 1.0 mg/day dose, returning the levator ani muscle to 75.2±9.51% of that observed in intact animals.
TABLE 3
Average (Mean ± S.D.) Organ Weights
Prostate Levator Ani Seminal Vesicles
Intact Control  100 ± 11.28   100 ± 12.12  100 ± 2.48
Castrated Control 7.6 ± 0.68  45.9 ± 10.84  8.4 ± 1.05
0.10 mg/day 6.4 ± 0.82 54.9 ± 5.77  8.8 ± 1.18
0.25 mg/day 5.7 ± 0.61 61.0 ± 5.23  7.6 ± 1.37
0.50 mg/day 6.2 ± 0.56 55.0 ± 9.23  9.3 ± 1.57
0.75 mg/day 7.6 ± 0.74 68.9 ± 8.46  9.8 ± 3.65
1.00 mg/day 8.7 ± 1.39 75.2 ± 9.51 10.7 ± 0.91
EXAMPLE 3
Androgenic and Anabolic Activity of Compound 6
The binding affinitiy of select compound 6 is represented in Table 4:
TABLE 4
Name Structure MW Ki
6
Figure US07026500-20060411-C00032
 		398.8 3.4 ± 0.08
The androgenic and anabolic activities of compound 6 was examined in a castrated rat model after 14 days of administration, using the method outlined in Example 1 above.
As shown in FIG. 3; the weights of prostate, seminal vesicle, and levator ani muscle in castrated, vehicle-treated rats decreased significantly, due to the ablation of endogenous androgen production. Exogenous administration of testosterone propionate, an androgenic and anabolic steroid, increased the weights of prostate, seminal vesicle, and levator ani muscle in castrated rats in a dose-dependent manner. Treatment with compound 6 resulted in dose-dependent increases in prostate, seminal vesicle and levator ani muscle weights. Compared with testosterone propionate, compound 6 showed lower potency and intrinsic activity in increasing the weights of prostate and seminal vesicle, but a greater potency and intrinsic activity in increasing the weight of levator ani muscle. Particularly, compound V, at a dose as low as 0.3 mg/day, was able to maintain the levator ani muscle weight of castrated animals in the same level as that of intact animals. Thus, compound 6 is a potent nonsteroidal anabolic agent with less androgenic activity but more anabolic activity than testosterone propionate. As in compounds 1-5 above, this is a significant improvement in that this compound selectively stimulates muscle growth and other anabolic effects while having less effect on the prostate and seminal vesicles.
EXAMPLE 4
Binding Affinities of Selective Androtten Receptor Modulators
The in-vitro androgen receptor binding affinity of other SARM compounds was studied and the results are presented in Table 5.
TABLE 5
Name Structure MW Ki
7
Figure US07026500-20060411-C00033
 		348.1  4.5 ± 0.11
8
Figure US07026500-20060411-C00034
 		421.4 12.7 ± 0.03
9
Figure US07026500-20060411-C00035
 		360.6 22.2 ± 0.17
10
Figure US07026500-20060411-C00036
 		391.7 14.5 ± 0.18
11
Figure US07026500-20060411-C00037
 		375.3 32.6 ± 0.19
12
Figure US07026500-20060411-C00038
 		483.2 15.6 ± 0.19
13
Figure US07026500-20060411-C00039
 		452.7 52.0 ± 0.13
14
Figure US07026500-20060411-C00040
 		436.2 25.9 ± 0.04
15
Figure US07026500-20060411-C00041
 		357.3 62.0 ± 0.05
16
Figure US07026500-20060411-C00042
 		440.2  3.5 ± 0.13
17
Figure US07026500-20060411-C00043
 		376.3 >1800
18
Figure US07026500-20060411-C00044
 		436.2 ND
19
Figure US07026500-20060411-C00045
 		458.41 ND
20
Figure US07026500-20060411-C00046
 		17.0 ± 0.64
ND - Not Determined
DHT Ki value: 0.36 ± 0.15
It will be appreciated by a person skilled in the art that the present invention is not limited by what has been particularly shown and described hereinabove. Rather, the scope of the invention is defined by the claims that follow:

Claims (24)

1. A selective androgen receptor modulator (SARM) compound having in-vivo androgenic and anabolic activity of a non-steroidal ligand for the androgen receptor, said compound represented by the structure of formula (I):
Figure US07026500-20060411-C00047
wherein X is O;
Z is NO2, CN, COR, or CONHR;
Y is I, CF3, Br, Cl, or SnR3;
R is an alkyl group or OH; and
Q is Cl.
2. The selective androgen modulator compound according to claim 1, wherein Z is CN.
3. The selective androgen modulator compound according to claim 1, wherein Y is CF3.
4. The selective androgen modulator compound according to claim 1, wherein Z, is CN, Y is CF3, and Q is Cl.
5. A composition comprising a selective androgen receptor modulator (SARM) compound having in-vivo androgenic and anabolic activity of a non-steroidal ligand for the androgen receptor, said compound represented by the structure of formula (I):
Figure US07026500-20060411-C00048
wherein X is O;
Z is NO2, CN, COR, or CONHR;
Y is I, CF3, Br, Cl, or SnR3;
R is an alkyl group or OH; and
Q is Cl.
6. The composition according to claim 5, wherein Z is CN.
7. The composition according to claim 5, wherein Y is CF3.
8. The composition according to claim 5, wherein Z is CN, Y is CF3, and Q is Cl.
9. A pharmaceutical composition comprising:
an effective amount of a selective androgen receptor modulator (SARM) compound having in-vivo androgenic mid anabolic activity of a non-steroidal ligand for the androgen receptor, said compound represented by the structure of formula (I):
Figure US07026500-20060411-C00049
wherein X is O;
Z is NO2, CN, COR, or CONHR;
Y is I, CF3, Br, Cl, or SnR3;
R is an alkyl group or OH;
Q is Cl; and
a pharmaceutically acceptable carrier, diluent or salt.
10. The pharmaceutical composition according to claim 9, wherein Z is CN.
11. The pharmaceutical composition according to claim 9, wherein Y is CF3.
12. The pharmaceutical composition according to claim 9, wherein Z is CN, Y is CF3, and Q is Cl.
13. A method of binding a selective androgen receptor modulator compound (SARM) to an androgen receptor, comprising the step of contacting the androgen receptor with a selective androgen receptor modulator compound having in-vivo androgenic and anabolic activity of a non-steroidal ligand forte androgen receptor, in an amount effective to bind the selective androgen receptor modulator compound to the androgen receptor, wherein said compound is represented by the structure of formula (I):
Figure US07026500-20060411-C00050
wherein X is O;
Z is NO2, CN, COR, or CONHR;
Y is I, CF3, Br, Cl, or SnR3;
R is an alkyl group or OH; and
Q is Cl.
14. The method according to claim 13, wherein Z is CN.
15. The method according to claim 13, wherein Y is CF3.
16. The method according to claim 13, wherein Z is CN, Y is CF3, and Q is Cl.
17. A method of hormone therapy comprising the step of contacting an androgen receptor of a subject with a selective androgen receptor modulator (SARM) compound having in-vivo androgenic and anabolic activity of a non-steroidal ligand for the androgenreceptor, in an amount effective bind the selective androgen receptor modulator compound to the androgen receptor and effect a change in an androgen-dependent condition, wherein said compound is represented by the structure of formula (I):
Figure US07026500-20060411-C00051
wherein X is O;
Z is NO2, CN, COR, or CONHR;
Y is I, CF3, Br, Cl, or SnR3;
R is an alkyl group or CH; and
Q is Cl.
18. The method according to claim 17, wherein Z is CN.
19. The method according to claim 17, wherein Y is CF3.
20. The method according to claim 17, wherein Z is CN, Y is CF3, and Q is Cl.
21. A method of treating a subject having a related hormone condition, comprising the step of contacting an androgen receptor of the subject with a selective androgen receptor modulator (SARM) compound having in-vivo androgenic and anabolic activity of a non-steroidal ligand for the androgen receptor, in an amount effective bind the selective androgen receptor modulator compound to the androgen receptor and effect a change in an androgen-dependent condition, wherein said compound is represented by the structure of formula (I):
Figure US07026500-20060411-C00052
wherein X is O;
Z is NO2, CN, COR, or CONHR
Y is I, CF3, Br, Cl, or SnR3;
R is an alkyl group or OH; and
Q is Cl.
22. The method according to claim 21, wherein Z is CN.
23. The method according to claim 21, wherein Y is CF3.
24. The method according to claim 21, wherein Z is CN, Y is CF3, and Q is Cl.
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GEAP20038798A GEP20084434B (en) 2002-10-16 2003-10-14 Halogenated selective androgen receptor modulators and methods of use thereof
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ES03777595T ES2324606T3 (en) 2002-10-16 2003-10-14 SELECTED HALOGENATED MODULATORS OF THE ANDROGEN RECEIVER AND METHODS OF USE OF THE SAME.
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KR1020057006606A KR101068779B1 (en) 2002-10-16 2003-10-14 Halogenated selective androgen receptor modulators and methods of us thereof
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EA200700854A EA014932B1 (en) 2002-10-16 2003-10-14 Method of treatment of conditions associated with androgen decline in female (adif)
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